Please verify the version of the flight controller based on the following picture before download firmware
Betaflight_4.3.0_CRAZYBEEF4SX1280 RC3 For Mobula7 1S ELRS with X12 ELRS V1.0 flight controller(MPU6000 GYRO Sensor)
Betaflight_4.3.0_CRAZYBEEF4SX1280_norevision ICM20689 For Mobula7 1S ELRS and Crux3 2S ELRS with X12 ELRS V2.0 flight controller(ICM20689 GYRO Sensor)
Betaflight_4.3.0_CRAZYBEEF4FR_norevision ICM20689 For Mobula7 1S Frsky and Crux3 2S Frsky with X12 Frsky V1.0 flight controller(ICM20689 GYRO Sensor)
Betaflight_4.3.0_STM32F411 For Mobula7 1S PNP / TBS and Crux3 2S PNP with X12 PNP V1.0 flight controller(ICM20689 GYRO Sensor)
First flash firmware and copy the content from Mobula7 1S ELRS diff all
Then connect Mobula7 1S ELRS to Betaflight configurator and move to CLI Command , paste all the content .
And the drone would move back to the original factory settings.
Firmware also compatible with ELRS F4 2G4 and ELRS X1 / X2 flight controller