BIQU B1 (SKR 2) Firmware
Flash drive support is enabled, but jumpers to enable support may not have been installed correctly from the factory. Follow Biqu's instructions, starting with Step 2 if flash drive support is not working correctly.
BLTouch Probe Support
Uncomment B1_USE_BLTOUCH for probe customizations.
This configuration retains the use of homing with a Z limit switch. If you want to home with the BLTouch probe, remove your Z limit switch & bracket and enable (uncomment) USE_PROBE_FOR_Z_HOMING and Z_SAFE_HOMING. Change Z_MIN_ENDSTOP_INVERTING from true to false.