Automotive ECU Firmware Reverse-Engineering -- 2

I have an original automotive ECU image that targets an NXP / Freescale SPC5777C (PowerPC e200 VLE, big-endian) and two derivative builds, V1 and V2. My goal is to understand—exactly what each patch changes and how it affects firmware behaviour—what each patch actually changes... (Budget: €250 - €750 EUR, Jobs: Assembly, Automotive Engineering, Binary Analysis, C++ Programming, Debugging, Electronics, Embedded Systems, Firmware Development, Microcontroller, Reverse Engineering)