that's why. EF erases, UF uploads. topic's end and SOLVED.
e97 i've found that debian stops at the 8th version about it (premade images). the main problem was that /lib/modules is empty and even if i found a solution to get debian buster in it, the libmali-midgard0 driver still shout repeatedly some error about rk3x-i2c in dmesg :'(
i hope arch will do better if the armbian image don't.
i'll start a new thread and register, if any find it useful.
nico_hey got a reaction from TRS-80 in [solved] Firefly RK3288 firmware uploading failed