How To Downgrade Ps3 Firmware 4.89 To 4.88 Patched -

Some work, some don’t. You must check the "Date Code."

Once the Flash is patched, you don't actually "downgrade" to official 4.88; you install . This gives you all the features of 4.88 with the added benefits of homebrew. Download a reliable 4.88.2 Evilnat CFW (or similar). Rename the file to PS3UPDAT.PUP . Place it on your USB: PS3 > UPDATE > PS3UPDAT.PUP . how to downgrade ps3 firmware 4.89 to 4.88

If the power cuts during the Flash Memory Patching (Step 2), your PS3 will become a "brick" (unfixable). Some work, some don’t

Before attempting a downgrade, you need to know the "Base Firmware" your console shipped with. If your base firmware is 4.89 or 4.90, you cannot go back to 4.88. Download the tool. Download a reliable 4

Always verify the MD5 hash of your firmware files to ensure they aren't corrupted before installing.

Since you are on 4.89, you cannot simply install a 4.88 update file over it; the PS3 will block it as an "older version." You must exploit the system memory (Flash) to allow the installation of older or custom software.