How To Downgrade Ps3 Firmware 4.89 To 4.88 [upd]

To go from 4.89 to 4.88, your console must be or be a Developer model (DEX) . Specifically, you need one of the following:

These cannot be downgraded to 4.88. You must use PS3HEN instead of CFW. Step 1: Check Compatibility with MinVerCheck how to downgrade ps3 firmware 4.89 to 4.88

Before you start, make sure you have:

Downgrading PS3 firmware from 4.89 to 4.88 is not supported officially and requires homebrew methods, carrying risks of bricking the console and potential PSN bans. The process involves verifying hardware compatibility with MinVerCheck, using tools like BGToolset, and enabling QA toggles within Custom Firmware (CFW) to allow installation of the older version. To go from 4

These are generally compatible with downgrading and CFW. To go from 4.89 to 4.88