Davee’s 09g Downgrader
While some1’s current release of his 6.xx Downgrader works wonders, PSP owners with 08g and 09g models are left out of the option of downgrading to 6.20. Thanks Sony. PSP Dev Davee took up the challenge of looking for away to allow these PSP models to downgrade to 6.20 and allow you to install Total_Noob’s 6.20 TN-E and/or the latest 6.20 PRO build.
Warning: Despite being tested with multiple units, do note that downgrading is still dangerous and it’s possible to brick your PSP. If you do proceed with the downgrade, you can go ahead and install the permanent patch for your chosen LCFW/HEN build but be forewarned that with this method, your PSP won’t identified properly (and may cause some problems in the future).
If the warning has shaken you, just use some1’s downgrader instead.
- A 08g or 09g PSP. If you have a different PSP model, use this guide instead.
- Davee’s Downgrader v5 : Mirror 1
- 6.20 OFW for 09g: Mirror 1
How to downgrade your 09g PSP to 6.20 OFW.
- Create an Update folder in PSP/GAME.
- Extract 620DowngraderDavee.zip and PSP_6.20_FW_UPDATE.zip
- Copy the ChronoSwitch Downgrader folder PSP/GAME
- Copy the EBOOT.pbp file PSP/GAME
- Run the Davee’s Downgrader from your XMB
- Follow the instructions on the screen.
- After the install a blue screen will appear. Press O to restore your settings.
ProTip: If you get white screen instead of blue, completely turn off your PSP and turn it on again then as fast as you can hit the following combination of buttons : Select + Start + Square + Triangle
Davee – legend. Originally made 6.35/6.31 downgrader
some1 – legend. 6.38/6.39/6.60 support.
bbtgp – legend. Continued updates to psardumper (pspdecrypt) and the signing application “prxEncrypter”.
coyotebean – legend. Coninuted updates to psardumper (pspdecrypt) and large influence and research regarding cryptographics.
kgsws – legend. First application signed and method released.
Silverspring – legend. Lots and lots of info on KIRK where we’d still be in the dark without.
Bubbletune – BTCNF injection code and bits and bobs here ;D
Source : [Davee’s blog]Tags: 6.20 Downgrader, 6.20 OFW, Firmware, Homebrew, Playstation Portable