Gausus

Found info from this post: Some general info her on u-boot for RK. https://u-boot.readthedocs.io/en/latest/board/rockchip/rockchip.html 1. Can you boot from Multitool.img ? , IF no then its will not be possible to boot Armbian from sdcard. 2. If you can , burn Armbian 22.08 - Debian image found inn first post to sdcard. 3. Burn Multitool.img to another sdcard or mount image on Linuxpc Manuel mount multitool.img From terminal. cd $HOME/Downloads/ # find first unused device , /dev/loop(24) losetup -f # Mount img on /dev/loop24 sudo losetup -P /dev/loop24 multitool.img # Open file-browser MULTITOOL/bsp/ # copy uboot.img and trustos.img to $HOME/Download Linuxpc # Insert sdcard to linuxpc and find dev of sdcard / often last sdX lsblk -f # My sdcard is assigned /dev/sdf # DD uboot and trust IMG to sdcard armbian # Replace /dev/SDCARD to your dev for sdcard like sdf sudo dd if=uboot.img of=/dev/SDCARD seek=16384 conv=fsync sudo dd if=trustos.img of=/dev/SDCARD seek=24576 conv=fsync If this not work you can copy the generic DTB rk3318-box.dtb form multitool.img to sdcard. You find generic DTB on root / multitool. Copy this to /boot/dtb/rockchip SDCARD to overwrite DTB on Armbian image. Or burn older Armbian img to test if they boots form sdcard when Android on internal storage. Happy booting!!

Thank you for the tips @jock I have 2 H96max+ RK3328 ∕ 4GB tvboxes. Armbian 22.08 - Debian Bullseye minimal - mainline kernel 5.18.10 BOX1 : On internal eMMC BOX2: Boot Armbian from SDCARD , Android on internal eMMC Benchmark from terminal: mbw 1000 Box1 : RAM 667Mhz CPU @ 1,3GHz AVG Method: MEMCPY Elapsed: 0.82118 MiB: 1000.00000 Copy: 1217.764 MiB/s AVG Method: DUMB Elapsed: 0.88632 MiB: 1000.00000 Copy: 1128.263 MiB/s AVG Method: MCBLOCK Elapsed: 0.27756 MiB: 1000.00000 Copy: 3602.800 MiB/s Box2 : RAM 333Mhz (Android uboot) CPU @ 1,3GHz AVG Method: MEMCPY Elapsed: 1.51033 MiB: 1000.00000 Copy: 662.107 MiB/s AVG Method: DUMB Elapsed: 1.62614 MiB: 1000.00000 Copy: 614.955 MiB/s AVG Method: MCBLOCK Elapsed: 0.54709 MiB: 1000.00000 Copy: 1827.854 MiB/s To boot from sdcard when Android on internal storage. 1. Flash Armbian on sdcard 2. Download Multitool.img 3. Mount multitool.img on linuxpc or flash to another sdcard. 4. Copy trustos.img and uboot.img from bsp folder to a folder on linuxpc, 5 . DD trustos.img and uboot.img to sdcard Armbian from linuxpc sudo dd if=uboot.img of=/dev/SDCARD seek=16384 conv=fsync sudo dd if=trustos.img of=/dev/SDCARD seek=24576 conv=fsync

Simple memory tests to compare 333Mhz vs 666MHz 666MHz / CPU @ 1,3 Ghz kernel 5.18 uboot eMMc dd if=/dev/zero of=/tmp/testfile bs=1M count=1000 1048576000 bytes (1.0 GB, 1000 MiB) copied, 3.41804 s, 307 MB/s 333 ? Mhz (Androide uboot) / CPU @ 1,3 Ghz dd if=/dev/zero of=/tmp/testfile bs=1M count=1000 1048576000 bytes (1.0 GB, 1000 MiB) copied, 3.95373 s, 265 MB/s