GmP Posted 21 hours ago Posted 21 hours ago Hi, welcome everyone. I’m using an H50 TV box that I was about to throw away because I thought I had completely bricked it. I disassembled it and found the pins to activate maskrom mode. I think this could be useful for everyone. I then installed the current image, and everything seems to work except for the HDMI output (blank screen). Do you have any suggestions? Thanks. Some data and photo below. In case you want to install please note that also multitool fails to activate the HDMI, so you will need SSH to config. SOC: RK3188 (Hopefully - I did not remove the heatsink) eMMC: Samsung KLMBG4GEAC-B001 32GB (64x4) eMCP: Samsung KMQN10006B 8 GB eMMC + 1 GB LPDDR3 RAM Wi-Fi IC 339S0209 2.4G/5G LAN working WIFI Working ---------------------------- root@rk3318-box:~# lscpu Architecture: aarch64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 4 On-line CPU(s) list: 0-3 Vendor ID: ARM Model name: Cortex-A53 Model: 4 Thread(s) per core: 1 Core(s) per cluster: 4 Socket(s): - Cluster(s): 1 Stepping: r0p4 CPU(s) scaling MHz: 60% CPU max MHz: 1008.0000 CPU min MHz: 600.0000 BogoMIPS: 48.00 Flags: fp asimd evtstrm aes pmull sha1 sha2 crc32 cpuid Caches (sum of all): L1d: 128 KiB (4 instances) L1i: 128 KiB (4 instances) L2: 256 KiB (1 instance) NUMA: NUMA node(s): 1 NUMA node0 CPU(s): 0-3 Vulnerabilities: Gather data sampling: Not affected Indirect target selection: Not affected Itlb multihit: Not affected L1tf: Not affected Mds: Not affected Meltdown: Not affected Mmio stale data: Not affected Reg file data sampling: Not affected Retbleed: Not affected Spec rstack overflow: Not affected Spec store bypass: Not affected Spectre v1: Mitigation; __user pointer sanitization Spectre v2: Not affected Srbds: Not affected Tsa: Not affected Tsx async abort: Not affected Vmscape: Not affected root@rk3318-box:~# free -l total used free shared buff/cache available Mem: 1504636 291372 1037440 46940 297848 1213264 Low: 1504636 467196 1037440 High: 0 0 0 Swap: 752316 0 752316 SOME TESTS ON THE HDMI ISSUE: hdmi_debug_20251008_230528.log hdmi_test_20251008_230948.log 1 Quote
Hqnicolas Posted 5 hours ago Posted 5 hours ago 16 hours ago, GmP said: I thought I had completely bricked it if you have tweezers and pin location for Maskroom rockchip will never be bricked 16 hours ago, GmP said: I disassembled it and found the pins to activate maskrom mode. thanks for sharing 16 hours ago, GmP said: Do you have any suggestions? I use the best technique of all, trial and error, tears, screams and anger. Search for the work from @jock as @paolosabatino in github You will find all variants dts files for this chip rk3318 and rk3328 test all of them https://github.com/armbian/build/blob/main/patch/kernel/archive/rockchip64-6.6/dt/rk3318-box.dts https://github.com/armbian/build/blob/main/patch/kernel/archive/rockchip64-6.17/dt/rk3318-box.dts also, this chip allready have a topic https://forum.armbian.com/topic/26978-csc-armbian-for-rk3318rk3328-tv-box-boards/ the solution was inside of it, just search DISCLAIMER (PLEASE READ): everything you can find in this thread (binaries, texts, code snippets, etc...) are provided AS-IS and are not part of official Armbian project. For this reason not people from Armbian project nor myself are responsible for misuse or loss of functionality of hardware. 0 Quote
GmP Posted 19 minutes ago Author Posted 19 minutes ago Thank you for the answer. Yes I will try the various dts, so far I have found that librelec - despiite not running at all, is crashing giving a visible prompt on the HDMI. I will try to compare that dtb/dts to the default rk3318-box and be back. 0 Quote
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