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Sorry my mistake. I have S905X and S905X2

Thanks again @SteeMan. Which Uboot should I use? My idea is the dtb file is related to hardware so it would work (maybe with some errors) but works no matter the OS is. I will try different dtb per you suggestion. Unfortunately with this android TV there is no way to flash the original firmware because is not available, it is a branded box with andoid TV.

Thank you @SteeMan. I used a couple of image to try: Armbian_20.10_Arm-64_bullseye_current_5.9.0 , Armbian_community_24.5.0-trunk.474_Aml-s9xx-box_bookworm_current_6.6.28_xfce_desktop.img adn I think I tried Armbian_community_24.5.0-trunk.433_Aml-s9xx-box_jammy_current_6.6.28_cinnamon_desktop.img also. About uboot I have two boxes one is S905 and the other is 905x then I used both u-boot-s905x-s912 and u-boot-s905x2-s922. And for dtb I used the same the box is using when running Emuelec and working . Maybe something different is needed. Let me know if I'm doing something wrong.

@SteeMan Yes i did it that way. Inserted the SD with the fix for boot. It booted, then I powered of and removed SD. After that I Inserted the Armbian SD card but then is when the boot loop appears. So there was no way to boot form any SD card anymore. But still works on Android TV when no SD card is present. Please let me know if I'm doing something wrong. Thank you.

@cuker thank you for the tip. I've just tried, but after installing the aml_autoscript suggested on that link the box with Armbian on Sd inserted starts a boot loop. It boot normally to Android TV with no SD card inserted. Any other suggestions will be appreciated.

@SteeMan Thank you for your quick answer! I missed that line I'm sorry. I assume Corelec and Emuelec will cause same problem with boot. Not sure how to reinstall firmware , I've only run automatic updates. Any advise to get and install original firmware?

Hi Guys, I was trying to install Armbian in a couple of boxes buit I had no luck. One is a SEI500W from SEI Robotics with AML 905X2 and the other is a Sagecom DIW 585 with AML 905X I followed the process and after trying to boot to recovery they start Andoid tv as normal (just takes more time). In the other hand I was able to run EMUELEC (Gaming emulator) on both devices with an image on SD so I'm assuming the problem is not a block. What do you think? Is there any ideas to try? Thank you in advance!