Updated Sonoff Tasmota Bridge with wrong firmware

I installed Tasmota firmware on my Sonoff Zigbee bridge over 2 years ago, and it worked fine. I found that my Tasmota devices didn’t work with my new installation of HA, because their firmware was too old. I updated the firmware on my devices and all worked OK. I then thought that I ought to also update the firmware on the Zigbee bridge, so I just went ahead and updated it with the same firmware as I used on the devices and it is now not working (I know - I shouldn’t have ‘fixed’ it because it wasn’t broken!).

How do I recover my Zigbee bridge to its previous working state, please?

Jim

Panic over!
I found the correct firmware to recover the router (tasmota-zbbridge.bin.gz) and it now works OK. I had to do it OTA, because the bin file was too big.

I’m off to bag my head against the wall 100 times while saying “If it’s not broke, don’t fix it!”

Jim