I have huge problems with the Xiaomi Mi 3G Router. According to various sources it should work "out of the box". I used this guide: https://wiki.openwrt.org/toh/xiaomi/mir3g#installation_via_ssh and the firmware listed here: https://downloads.openwrt.org/releases/18.06.1/targets/ramips/mt7621/.
But this firmware always results in a boot hangup and therefor a softbrick.
[ 4.624339] [<80549cc4>] 0x80549cc4 [ 4.627807] [<80549248>] 0x80549248 [ 4.631274] [<80476c4c>] 0x80476c4c [ 4.634744] [<80476c5c>] 0x80476c5c [ 4.638213] [<80476c4c>] 0x80476c4c [ 4.641680] [<8000afd8>] 0x8000afd8 [ 4.645154] [ 4.646757] ubi0 error: 0x802e7530: failed to erase PEB 939, error -5 [ 4.653192] ubi0: mark PEB 939 as bad
I can provide a full bootlog if someone describes how to log it into a file
screen -L does nothing when used with a serial connection.
Thanks for the help! Keep going the good work