http://go7cnxivpns4x2trczyaabxwnrz7bwlxjiverkc32o4mjd5npjukpqid.onion/blog/2020-12-03-rescuing-n900.html
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. I tried to figure out how adding entries to U-Boot works under the hood. In
rescueOS sources there is an example U-Boot menu entry in file
( uboot_item_by_kerio ),
but it seems to be a bit outdated.