Instead of searching for a custom binary file, you can optimize your experience by:
Use a tool like HxD (Hex Editor) . By comparing your original (dumped) firmware with the new update file, you can copy the header from the old file onto the new one. This "tricks" the hardware into accepting a firmware it previously deemed incompatible. 3. Programmer-Level Flashing (The Last Resort) cm69updatebin better
If you want, I can: