This chip stores the actual PlayStation 4 system software, including the core operating system files. The SFLASH contains two separate "slots" for firmware: the active slot (holding your current 9.03 firmware) and the backup slot (holding the previous firmware version you updated from).
Locate the (a square, multi-pin Renesas microcontroller). downgrade ps4 903 to 900 fix
To successfully downgrade, you must desolder both chips, read their data using specialized hardware, patch the Syscon's internal memory to "forget" it ever saw 9.03, swap the active boot slots inside the SFLASH image, and solder both chips back onto the motherboard. Strict Prerequisites and Limitations This chip stores the actual PlayStation 4 system