Checking Firmware
For the BC796, push 2 - 4 - 9 while turning on the scanner. You will see a screen that says to please wait. The firmware will then display and then the checksum (? I think it is). The scanner will then power up on it's own.
The only thing I noticed, be sure the buttons 2, 4, and 9 are firmly pressed while turning on the scanner. After checking the firmware version, I still had to turn off my scanner and then power it up normally to allow the radio to properly decode P25 signals again.
---bob