Hi all, and thanks you all so much for sharing time, effort and knowledge about this boxes. I'm reading this forum a lot and also learned from advanced users. Me only start to play around, doing some test with trial and mostly errors! First all, I'm not sure if this goes here, please move it if necessary. This box come with a S905X2 SoC, and while working fine with an ATV12, I think I brick it and I only partially can boot from SD-Card burned with a full image I take with an Armbian version (SD-Card), doing dding of their eMMC. So the first I notice is that in UART console first line I see is hex character in a loop, I don't see normal and reading chars while telling You the board are in MaskROM mode, right? I can run Armbian via run recovery_from_udisk, but was not able to see their eMMC at all. I want to share with You the full UART log I get when turn it on: <FE>L<A8><FF><FC><FF><F3><FB><FE><FC><FE><FE><FD> bl2_stage_init 0x01 bl2_stage_init 0x81 hw id: 0x0000 - pwm id 0x01 bl2_stage_init 0xc1 bl2_stage_init 0x02 no sdio debug board detected L0:0000037f L1:00000701 L2:00008067 L3:04000000 S1:00000000 B2:00032060 B1:f2f939b2 TE: 2817112 BL2 Built : 14:43:12, Jun 17 2020. g12a g5b1c0d3 - shen.liu@droid11-sz Board ID = 1 Set cpu clk to 24M Set clk81 to 24M CPU clk: 1200 MHz Set clk81 to 166.6M OTP_ARB=00000001 DDR driver_vesion: LPDDR4_PHY_V_0_1_21 build time: Jun 17 2020 14:43:08 board id: 1 Load FIP HDR from SD, src: 0x00010200, des: 0xfffd0000, size: 0x00004000, part: 0 Get wrong ddr fw magic! Error!! fw parse done Load ddrfw from SD, src: 0x00060200, des: 0xfffd0000, size: 0x0000c000, part: 0 Load ddrfw from SD, src: 0x00038200, des: 0xfffd0000, size: 0x00004000, part: 0 PIEI prepare done fastboot data verify result: 255 Cfg max: 12, cur: 1. Board id: 255. Force loop cfg DDR4 probe ddr clk to 1176MHz Load ddrfw from SD, src: 0x00014200, des: 0xfffd0000, size: 0x0000c000, part: 0 dmc_version 0000 Check phy result INFO : End of initialization INFO : End of read enable training INFO : End of fine write leveling INFO : End of read dq deskew training INFO : End of MPR read delay center optimization INFO : End of Write leveling coarse delay INFO : End of write delay center optimization INFO : End of read delay center optimization INFO : End of max read latency training INFO : Training has run successfully! 1D training succeed Load ddrfw from SD, src: 0x00020200, des: 0xfffd0000, size: 0x0000c000, part: 0 Check phy result INFO : End of initialization INFO : End of 2D read delay Voltage center optimization INFO : End of 2D write delay Voltage center optimization INFO : Training has run successfully! soc_vref_reg_value 0x 00000034 0000002f 00000034 00000033 0000002f 00000033 00000031 00000031 00000037 00000032 00000033 00000034 00000032 00000035 00000030 00000030 0000002c 0000002f 00000031 00000031 00000035 00000030 00000031 00000032 0000002f 0000002d 0000002d 0000002d 0000002f 0000002e 00000030 00000033 dwc_ddrphy_apb_wr((0<<20)|(2<<16)|(0<<12)|(0xb0):0001 dram_vref_reg_value 0x 00000013 2D training succeed aml_ddr_fw_vesion: LPDDR4_PHY_V_0_1_21 build time: Nov 19 2019 17:21:16 auto size-- 65535DDR cs0 size: 2048MB DDR cs1 size: 0MB DMC_DDR_CTRL: 0050002cDDR size: 2048MB cs0 DataBus test pass cs0 AddrBus test pass non-sec scramble use zero key ddr scramble enabled 100bdlr_step_size ps== 447 result report boot times 0Enable ddr reg access Load FIP HDR from SD, src: 0x00010200, des: 0x01700000, size: 0x00004000, part: 0 Load BL3X from SD, src: 0x0006c200, des: 0x0175c000, size: 0x00124000, part: 0 bl2z: ptr: 0512a330, size: 00001e40 0.0;0.0;M3 CHK:0;cm4_sp_mode 0 MVN_1=0x00000000 MVN_2=0x00000000 [Image: g12a_v1.1.3382-173caa3 2019-09-26 18:26:21 luan.yuan@droid15-sz] OPS=0x40 ring efuse init 28 0c 40 00 01 39 16 00 00 08 33 36 42 48 33 50 [0.053419 Inits done] secure task start! high task start! low task start! run into bl31 NOTICE: BL31: v1.3(release):f941450 NOTICE: BL31: Built : 20:39:13, Sep 24 2019 NOTICE: BL31: G12A secure boot! NOTICE: BL31: BL33 decompress pass INFO: BL3-2: ATOS-V2.4.2-36-g1b730d08 #1 Wed Feb 5 17:47:09 2020 +0800 arm INFO: BL3-2: Chip: G12A Rev: C (28:C - 40:2) INFO: BL3-2: crypto engine DMA INFO: BL3-2: secure time TEE INFO: BL3-2: CONFIG_DEVICE_SECURE 0xb200000e U-Boot 2015.01-g5316a3ec07 (Dec 29 2021 - 10:53:50) DRAM: 2 GiB Relocation Offset is: 76e2b000 spi_post_bind(spifc): req_seq = 0 register usb cfg[0][1] = 0000000077f37c68 NAND: get_sys_clk_rate_mtd() 270, clock setting 200! couldn`t found selected chip: 0 ready NAND device id: 0 0 0 0 0 0 No NAND device found!!! nand init failed: -6 get_sys_clk_rate_mtd() 270, clock setting 200! couldn`t found selected chip: 0 ready NAND device id: 0 0 0 0 0 0 No NAND device found!!! nand init failed: -6 MMC: aml_priv->desc_buf = 0x0000000073e1b710 aml_priv->desc_buf = 0x0000000073e1da50 SDIO Port B: 0, SDIO Port C: 1 co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 MMC init failed Using default environment In: serial Out: serial Err: serial reboot_mode=cold_boot gpio: pin GPIOH_8 (gpio 39) value is 0 gpio: pin GPIOH_5 (gpio 36) value is 0 gpio: pin GPIOA_14 (gpio 78) value is 0 gpio: pin GPIOA_14 (gpio 78) value is 1 [store]To run cmd[emmc dtb_read 0x1000000 0x40000] co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 _dtb_init()-3517: mmc init failed [store]decrypt dtb: Sig Check -2 [KM]Error:f[keymanage_dts_parse]L287:not a fdt at 0x0000000001000000 vpu: error: vpu: check dts: FDT_ERR_BADMAGIC, load default parameters vpu: clk_level = 7 vpu: vpu_power_on vpu: set clk: 666667000Hz, readback: 666666667Hz(0x100) vpu: vpu_module_init_config vpp: vpp_init vpp: vpp osd2 matrix rgb2yuv.............. hdr_func 4, hdr_process_select 0x1 hdr_func 1, hdr_process_select 0x1 hdr_func 2, hdr_process_select 0x1 cvbs: cpuid:0x28 card in co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 40000000 init_part() 297: PART_TYPE_AML [mmc_init] mmc init success Device: SDIO Port B Manufacturer ID: 2 OEM: 544d Name: SA16G Tran Speed: 50000000 Rd Block Len: 512 SD version 3.0 High Capacity: Yes Capacity: 14.6 GiB mmc clock: 40000000 Bus Width: 4-bit ** Partition 1 not found on device 0 ** ** Invalid partition 1 ** board_late_init boardtype: 0 libfdt fdt_check_header(): FDT_ERR_BADMAGIC aml_config_dtb 612 aml_config_dtb 642 No FDT memory address configured. Please configure the FDT address via "fdt addr <address>" command. Aborting! No FDT memory address configured. Please configure the FDT address via "fdt addr <address>" command. Aborting! No FDT memory address configured. Please configure the FDT address via "fdt addr <address>" command. Aborting! No FDT memory address configured. Please configure the FDT address via "fdt addr <address>" command. Aborting! No FDT memory address configured. Please configure the FDT address via "fdt addr <address>" command. Aborting! No FDT memory address configured. Please configure the FDT address via "fdt addr <address>" command. Aborting! No FDT memory address configured. Please configure the FDT address via "fdt addr <address>" command. Aborting! No FDT memory address configured. Please configure the FDT address via "fdt addr <address>" command. Aborting! Net: dwmac.ff3f0000[KM]Error:f[keymanage_dts_parse]L287:not a fdt at 0x0000000001000000 Error: eth_get_efuse_mac failed!!! MACADDR:02:00:00:16:39:01(from chipid) MACADDR:^B(from env) CONFIG_AVB2: avb2 Start read misc partition datas! Cannot find dev. amlmmc cmd <NULL> failed store - STORE sub-system Usage: store init flag store read name addr off|partition size read 'size' bytes starting at offset 'off' to/from memory address 'addr', skipping bad blocks. store write name addr off|partition size write 'size' bytes starting at offset 'off' to/from memory address 'addr', skipping bad blocks. store rom_write add off size. write uboot to the boot device store erase boot/data: erase the area which is uboot or data store erase partition <partition_name>: erase the area which partition in u-boot store erase dtb store erase key store disprotect key store rom_protect on/off store scrub off|partition size scrub the area from offset and size store dtb iread/read/write addr <size> read/write dtb, size is optional store key read/write addr <size> read/write key, size is optional store ddr_parameter read/write addr <size> read/write ddr parameter, size is optional store mbr addr update mbr/partition table by dtb [burnup]Err:store_read_ops,L63:cmd failed, ret=1, [store read misc 0x73e1a090 0x0 0x820] failed to store read misc. info->magic = info->version_major = 0 info->version_minor = 0 info->slots[0].priority = 0 info->slots[0].tries_remaining = 0 info->slots[0].successful_boot = 0 info->slots[1].priority = 0 info->slots[1].tries_remaining = 0 info->slots[1].successful_boot = 0 info->crc32 = 0 Magic is incorrect. boot-info is invalid. Resetting. save boot-info info->magic = info->version_major = 1 info->version_minor = 0 info->slots[0].priority = 15 info->slots[0].tries_remaining = 7 info->slots[0].successful_boot = 0 info->slots[1].priority = 14 info->slots[1].tries_remaining = 7 info->slots[1].successful_boot = 0 info->crc32 = -1075449479 Cannot find dev. amlmmc cmd <NULL> failed store - STORE sub-system Usage: store init flag store read name addr off|partition size read 'size' bytes starting at offset 'off' to/from memory address 'addr', skipping bad blocks. store write name addr off|partition size write 'size' bytes starting at offset 'off' to/from memory address 'addr', skipping bad blocks. store rom_write add off size. write uboot to the boot device store erase boot/data: erase the area which is uboot or data store erase partition <partition_name>: erase the area which partition in u-boot store erase dtb store erase key store disprotect key store rom_protect on/off store scrub off|partition size scrub the area from offset and size store dtb iread/read/write addr <size> read/write dtb, size is optional store key read/write addr <size> read/write key, size is optional store ddr_parameter read/write addr <size> read/write ddr parameter, size is optional store mbr addr update mbr/partition table by dtb [burnup]Err:store_write_ops,L110:cmd [store write misc 0x73e1a090 0x0 0x820] failed active slot = 0 wipe_data=successful wipe_cache=successful upgrade_step=0 reboot_mode:::: cold_boot [KM]Error:f[keymanage_dts_parse]L287:not a fdt at 0x0000000001000000 upgrade_step0=0 co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 get_part_info_by_name()-1497: Got conf in virtual table conf-mmc partition offset(0x739143159a4294f5) co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 addr notalign 9a4294f5 or byte count notalign 800 Init conf partition flash failed: -6 conf_fs_init return -6 do_sync_vout read conf item null ztebsp init display outputmode=1080p60hz hdmimode=1080p60hz cvbsmode=576cvbs hpd_state=0 do_hpd_detect: hdmimode=1080p60hz do_hpd_detect: colorattribute=444,8bit Saving Environment to aml-storage... co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 MMC init failed no sink, fallback to 720p60hz[4] hdr mode is 0 dv mode is ver:0 len: 0 hdr10+ mode is 0 read hdmichecksum 0x00000000, colorattribute 444,8bit read hdmimode 1080p60hz, colorspace <NULL>, colordepth <NULL> do_get_parse_edid: autoMode = false, manualMode=16 isYuv4kSink: false, maxTMDSRate=150 do_get_parse_edid: non-yuv4k sink: inColorSpace: HDMI_COLOR_FORMAT_RGB do_get_parse_edid: default inColorDepth: HDMI_COLOR_DEPTH_24B TV is same, initial mode is: 576cvbs attr: 444,8bit [OSD]check dts: FDT_ERR_BADMAGIC, load default fb_addr parameters [OSD]set initrd_high: 0x3d800000 [OSD]fb_addr for logo: 0x3d800000 [OSD]check dts: FDT_ERR_BADMAGIC, load default fb_addr parameters [OSD]fb_addr for logo: 0x3d800000 [OSD]VPP_OFIFO_SIZE:0xfff01fff [CANVAS]canvas init [CANVAS]addr=0x3d800000 width=5760, height=2160 Cannot find dev. amlmmc cmd <NULL> failed store - STORE sub-system Usage: store init flag store read name addr off|partition size read 'size' bytes starting at offset 'off' to/from memory address 'addr', skipping bad blocks. store write name addr off|partition size write 'size' bytes starting at offset 'off' to/from memory address 'addr', skipping bad blocks. store rom_write add off size. write uboot to the boot device store erase boot/data: erase the area which is uboot or data store erase partition <partition_name>: erase the area which partition in u-boot store erase dtb store erase key store disprotect key store rom_protect on/off store scrub off|partition size scrub the area from offset and size store dtb iread/read/write addr <size> read/write dtb, size is optional store key read/write addr <size> read/write key, size is optional store ddr_parameter read/write addr <size> read/write ddr parameter, size is optional store mbr addr update mbr/partition table by dtb [burnup]Err:store_read_ops,L63:cmd failed, ret=1, [store read logo 0x1080000 0x0 0x2000] Err imgread(L523):Fail to read 0x2000B from part[logo] at offset 0 There is no valid bmp file at the given address [OSD]osd_hw.free_dst_data: 0,719,0,575 [OSD]osd1_update_disp_freescale_enable vpp: vpp_matrix_update: 2 no performance table cvbs_config_hdmipll_g12a cvbs_set_vid2_clk vdac_enable: 1, module_sel:0x8 Unknown command 'dovi' - try 'help' Unknown command 'dovi' - try 'help' hdr_packet vpp: hdr_policy = 0 vpp: Rx hdr_info.hdr_sup_eotf_smpte_st_2084 = 0 [KM]Error:f[keymanage_dts_parse]L287:not a fdt at 0x0000000001000000 gpio: pin GPIOAO_3 (gpio 3) value is 1 Command: bcb uboot-command Start read misc partition datas! Cannot find dev. amlmmc cmd <NULL> failed store - STORE sub-system Usage: store init flag store read name addr off|partition size read 'size' bytes starting at offset 'off' to/from memory address 'addr', skipping bad blocks. store write name addr off|partition size write 'size' bytes starting at offset 'off' to/from memory address 'addr', skipping bad blocks. store rom_write add off size. write uboot to the boot device store erase boot/data: erase the area which is uboot or data store erase partition <partition_name>: erase the area which partition in u-boot store erase dtb store erase key store disprotect key store rom_protect on/off store scrub off|partition size scrub the area from offset and size store dtb iread/read/write addr <size> read/write dtb, size is optional store key read/write addr <size> read/write key, size is optional store ddr_parameter read/write addr <size> read/write ddr parameter, size is optional store mbr addr update mbr/partition table by dtb [burnup]Err:store_read_ops,L63:cmd failed, ret=1, [store read misc 0x73e1a080 0x0 0x440] failed to store read misc. bcb - bcb Usage: bcb This command will run some commands which saved in misc partition by mark to decide whether execute command! Command format: bcb bcb_mark Example: /dev/block/misc partiton is saved some contents: uboot-command N/A setenv aa 11;setenv bb 22;setenv cc 33;saveenv; So you can execute command: bcb uboot-command [KM]Error:f[keymanage_dts_parse]L287:not a fdt at 0x0000000001000000 ztebsp: bootcmd=bootsys co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 get_part_info_by_name()-1497: Got conf in virtual table conf-mmc partition offset(0x739143159a4294f5) co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 addr notalign 9a4294f5 or byte count notalign 800 Init conf partition flash failed: -6 conf_fs_init return -6 can not read item from config fs not found mac in efuse ztebsp: ethaddr=00:15:18 Hit any key to stop autoboot: 0 ztebsp:boot_revision = V0001,10:53:51 co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 get_part_info_by_name()-1497: Got conf in virtual table conf-mmc partition offset(0x739143159a4294f5) co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 addr notalign 9a4294f5 or byte count notalign 800 Init conf partition flash failed: -6 conf_fs_init return -6 can not read item from config fs env_mac: 00:15:18:01:81:31 ran_mac: 66:d8:95:01:65:d8 env_zte_dispmode: 720p env_ethaddr: 66:d8:95:01:65:d8 boardtype: 0 vout: 576cvbs,enable logo: osd0,loaded,0x3d800000,576cvbs env_chipidenable: 1 chipid: 0000000000000000, ret=8 Saving Environment to aml-storage... co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 MMC init failed bootmode:NORM Cannot find dev. co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 get_part_info_by_name()-1497: Got conf in virtual table conf-mmc partition offset(0x739143159a4294f5) co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 addr notalign 9a4294f5 or byte count notalign 800 Init conf partition flash failed: -6 conf_fs_init return -6 can not read item from config fs not found mac in efuse ztebsp: ethaddr=00:15:18 Hit any key to stop autoboot: 0 ztebsp:boot_revision = V0001,10:53:51 co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 get_part_info_by_name()-1497: Got conf in virtual table conf-mmc partition offset(0x739143159a4294f5) co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 addr notalign 9a4294f5 or byte count notalign 800 Init conf partition flash failed: -6 conf_fs_init return -6 can not read item from config fs env_mac: 00:15:18:01:81:31 ran_mac: 66:d8:95:01:65:d8 env_zte_dispmode: 720p env_ethaddr: 66:d8:95:01:65:d8 boardtype: 0 vout: 576cvbs,enable logo: osd0,loaded,0x3d800000,576cvbs env_chipidenable: 1 chipid: 0000000000000000, ret=8 Saving Environment to aml-storage... co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 co-phase 0x2, tx-dly 0, clock 400000 MMC init failed bootmode:NORM Cannot find dev. boot system norm failed, try boot safe! Cannot find dev. g12a_u212_v1# Let's see first line of hex char, then boot from SD. At last I get prompt as can be see it. If not SD card when turn it on, the hex char get loop over and over, and connect to my linux box with a male-to-male USB A, I see this when reset: g12a_u212_v1#reset resetting ... <FE>.<AA> Only 2 hex chars and stop if I get USB cable connected while doing lsusb I see this: Bus 001 Device 010: ID 1b8e:c003 Amlogic, Inc. GX-CHIP If I'm not wrong it's MaskROM mode and it's detected by Amlogic Burning Tool (in Windows) also. But try to burn any, gets fails after erase flash. Once again thanks you so much and my apology ! Take care! Z80

Thank you, first of all! So you mean that even in vendor's preinstalled Android they don't use GPU for that? I installed there VLC + couple of players from vanilla stores - all of them have no issues with HW decoding at all... According to their status Cedrus could be much easier way - VLC stated there as supported already

You could check the UUID with blkid /dev/mmcblk0p1: UUID="b23e98d0-700e-4a09-88b6-95675ee524f5" Then check if this is the same in /boot/armbianEnv.txt and /etc/fstab

yes, tried different tv/monitor always with the same problem, solved by disabling video driver in u-boot.

I think you can Find things: https://forum.armbian.com/topic/18255-rk3566-and-armbian/ @f3nyx if you have patience you can support this device for community.