Arvo

If all other things work well (except for ethernet) then your used image is OK and you can play around with dtb configuration. Cheap TV boxes are made from available parts, which means lot of hardware variations. You can try to use different dtb files (one at time) and if you are lucky, you will get fully functional and stable Armbian device. Even if you find a dtb, which provides ethernet w/o WiFi (or w/o some other functionality), you are also lucky, because Frankenstein dtb can be crafted from both Don't forget to check sensors under load (apt install lm-sensors), as TV box CPU radiators often are small, cases has no ventilation holes and CPU settings of used image may be not optimal. Once I did similar exercise with Tanix TX9S and was lucky (even bluetooth started), so good luck to you as well.

I tried recovery menu approach with Tanix Tx9 - no success via boot and also same through upgrade from Armbian config app. Recovery button method worked out, although afterwards had to play around with dtb files. May be this switch is soldered on board (or contacts intentionally left visible with some marking) to be accessible after some disassembly .

After 2+ years of hard work the fan of my M4V2 (in metal case with NVMe adapter) has stopped with specific burning smell. I ordered the same fan model (https://www.aliexpress.com/item/1005003989901083.html), replaced it and there is no rotation at all. Fan has been controlled by bash script from here: Has anybody got the same story? How it has resolved? My suspicions are on NVMe adapter, through which fan is powered - some draft scheme can be found, showing 5V/12V convertor and P-MOS switch: https://wiki.friendlyelec.com/wiki/index.php/NVME_SSD_Adapter_for_M4 SBC in this case works well w/o fan (~45 degrees of Celsius) during winter, but it is required under heavy load, especially in summer. Due to this additional adapter fan is not detected by pwmcontrol or other means.

Got an answer from SinoVoip - "Our DC port size is 4.0X1.7". Will leave it here - just in case, if someone is looking for BPI-M2 Pro power plug specs.

Sorry about off-topic, just got forum giveaway Banana Pi M2 Pro and got confused - manufacturer doesn't care to reveal power jack size and all my 5V power adapter plugins are too small or too large. Can some happy owner of this SBC share plugin dimensions?