http://go7cnxivpns4x2trczyaabxwnrz7bwlxjiverkc32o4mjd5npjukpqid.onion/blog/2020-12-03-rescuing-n900.html
thread on
maemo.org suggested that letting it charge on bootloader could help, but it
wasn't working for me. Then I tried running rescueOS, but I found that, for
unknown reason, flasing doesn't work either. What I was left with, was trying to
run rescueOS from SD card with U-Boot.