flipper_serprog

A serprog-based SPI programmer for use with flashrom on the Flipper Zero.

Wiring Guide

Note: Some additional SPI chip pins may need to be held high for proper operation.
This can be done with pull-up resistors to 3V3, or (less recommended) by directly connecting them to the 3V3 rail.
Example: the /HOLD and /WP pins on Winbond chips.

Safety tip:
If using a SOP8 clip, attach the device and verify connections while the Flipper Zero is powered off.
Voltage fluctuations on the 3V3 rail may interfere with other peripherals (e.g., the SD card interface) if the Flipper is powered on.

Usage

Use flashrom to interface with the Flipper Zero via USB.

By default, flipper_serprog uses the secondary VCP channel, so the serprog interface may appear under a different tty device number.

You can change the VCP channel by modifying USB_VCP_CHANNEL in the source code and recompiling.

If you set the VCP channel to 0, the standard Flipper Zero RPC interface will be unavailable while flipper_serprog is running.

Example usage:

```bash flashrom -p serprog:dev=/dev/tty.usbmodemflip_3 -r spi.bin