The developer some1 back to update its 6.3x Downgrader, implementing a safety plus.
The 6.3x Downgrader allows anyone had installed the FW 6.39/6.38 can easily return back to FW 6.20 or FW 6:35 in the case of PSP 07G and 09G . Precisely because of these differences in the downgrade, the developer some1 makes the 3.5 version of its tool that implements a check of the PSP model in use, thus blocking any downgrade wrong, thereby minimizing the risk of brick not hackable PSP (TA-088v3 and subsequent models).
Remind you that the operation console for this downgrade is at your own risk
More info to follow
Compatibility:
PSP 1000, 2000 and 3000 (also 07G and 09G), PSP Go!
Instructions:
Download the archive 6.3x Downgrader v3.5 and unzip it in the root directory of the Memory Stick
Download the official FW 6.20 or 6:35 depending on your model of PSP
In the case of PSP 07G below:
Place the FW 6.20 eboot in PSP / GAME / UPDATE
In the case of PSP 07G or 09G:
Place the eboot of 6:35 FW in PSP / GAME / UPDATE
Follow the onscreen instructions.
NB: The archive contains the source code in src