This tutorial is very important for all PS3 owners who have downgraded their PS3′s, (may it be from OFW 3.55+ and used hardware flashers to downgrade back to 3.55, or for those who downgraded from Rogero 3.xx and above) and would like to install the latest Rogero Custom Firmware.
What Dehashing basically does is it resets the PS3′s Syscon hashes back to 3.55 with both “ros0” and “ros1”, making your PS3 back into an original/non-downgraded state and you do not need to worry about disabling LV1 checks when you install any CEX/DEX or the latest PS3 Official Firmware.
(The first part is basically the same with my other tutorial about how to Toggle QA flag on your PS3, Toggle QA only works in 3.55 OFW or CFW)
Here’s How to Dehash your PS3:
1. Download QA Toggle pkg here
2. Copy the file to the root of your USB or external HD
3. Insert your USB/External HD to your PS3
4. On your PS3, go to “Install package Files” and install the QA Toggle PKG
5. Once installed, run the “Rebug Toggle QA” on your PS3, (The screen will go Black and you will hear 2 or 3 Beeps and when finished it will go back to the PS3′s XMB, and if error comes up, just repeat this step.)
6. Go to “Network Settings” (do not open it) then all at the same time, press the following key combo : L1 + L2 + L3 (press left stick) + R1 + R2 + dpad_down (its hard you might want to get an extra hand for this)
7. If the QA Flag was done correctly, you will see Edy Viewer, Debug Settings, and Install Package Files.
Now you have a Dehashed PS3 and the next step is to go to recovery mode.
Here’s is how to activate recovery mode on your PS3:
1. While your PS3 is on, turn it off by pressing and holding the power button until it turns off
2. When the PS3 is OFF, press and hold the power button until you hear two beeps
3. When this happens, the PS3 should boot up in recovery Mode (if it does not, repeat steps 1 and 2)
When you are now in recovery mode, you can now install any firmware that you want, may it be Rogero 4.30 or the Latest Official Firmware from Sony. (just select option 6)