A: You will need a serial console (UART) adapter and Nokia’s original firmware, which is not publicly available. Contact your ISP and claim an "automatic firmware update failed" for a replacement.
A quick Google search for "nokia g2425g a router unlock software download link" returns a minefield of sketchy forums, YouTube videos with password-protected RAR files, and potentially dangerous executables. nokia g2425g a router unlock software download link
Try these known working credentials: