Hey guys!

I see a lot of people in the questions section of this thread having trouble switching firmwares after using Rogero's 999 Downgrader. They usually get a corrupted firmware error.

The easy fix for this is to install Rogero 3.55 CFW v3.7 or Rebug 3.55.4 CFW and then install any CFW 3.55+ over it.

Simple post but should help a few people

Instructions (for the noobs)

MAKE SURE YOU HAVE QA TOGGLED

• Download the Custom Firmware Linked Below
  
• Put it on a USB Mass Storage Device or External HDD
  
• Place in the directory PS3/UPDATE/
  
• Name the file PS3UPDAT.PUP if not done so already
  
• Safely eject and plug USB in PS3 then install under Settings/System Update/Update via Storage Media
  

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