PS C:\Users\andre> ssh root@192.168.1.1

BusyBox v1.33.2 (2022-04-16 12:59:34 UTC) built-in shell (ash)

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 |   -   ||  _  |  -__|     ||  |  |  ||   _||   _|
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          |__| W I R E L E S S   F R E E D O M
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 OpenWrt 21.02.3, r16554-1d4dea6d4f
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================= FAILSAFE MODE active ================
special commands:
* firstboot          reset settings to factory defaults
* mount_root     mount root-partition with config files

after mount_root:
* passwd                         change root's password
* /etc/config               directory with config files

for more help see:
https://openwrt.org/docs/guide-user/troubleshooting/
- failsafe_and_factory_reset
- root_password_reset
=======================================================

root@(none):~# mount_root
switching to jffs2 overlay
root@(none):/rom/root# passwd
Changing password for root
New password:
Bad password: too weak
Retype password:
passwd: password for root changed by root
root@(none):/rom/root# reboot -f