The only method to restore the factory PID is via reflashing the firmware for the moment.


About how to flash the firmware, please check this thread on Silverware Offical Website or RCG.


http://sirdomsen.diskstation.me/dokuwiki/doku.php?id=gallery

https://www.rcgroups.com/forums/showthread.php?2876797-Boldclash-bwhoop-B-03-opensource-firmware


The firmware for BETAFPV Lite FC board is available in the attached file.


Of course, if you want to compile the files by yourself, please download the files here:


https://github.com/silver13/BoldClash-BWHOOP-B-03