"Update Complete! Message: Cannot upgrade: burnfile Failed.

Any idea what caused this error message during software upgrade from 8.2.2 and 8.2.4 to 8.2.7 utilizing Prizm 3.1???

"Update Complete! Message: Cannot upgrade: burnfile Failed. Output from
Telnet session: burnflash Burn Boot from file: SMboot.bin Validating
Boot File… File Checksum OK 090D97A6 Updating Alt Boot… Burn Alt…
Lost Telnet Session"

Regards,

Poor link perhaps? Maybe the radio needs a reboot prior to upgrading? I had to reboot a bunch of 8.2.7 SMs to get 9.0 to load properly.