We have an 851 router with an invalid 12.4(15)XY2 image. When we installed the image on the router we did not verify it (first error) and we changed the configuration register but we did not write down the new value (second error). Then we rebooted the router and ... we are in an endless reboot loop.
Before beginning to decompress the image the router writes "*** Program Exception *** and then reboots. We can not enter rommon as break does not work, I suspect we disabled it before rebooting for the first time.
Â¿Is this router recoverable?