Chronoswitch Downgrader v7.0 2017-02-07

Chronoswitch Downgrader v7.0

  1. D!CRA
    Beinhaltet die OFW 6.20 und 6.60 für die PSP Modelle 1000-3000 & E1000

    Für die Go Modelle die EBOOT.PBP in PSP/GAME/UPDATE/EBOOT.PBP mit der OFW für die PSP GO ersetzen !!!!

    Chronoswitch Downgrader

    -> Added support for Infinity[VERSION 6.1]
    -> Added support for 11g units to 6.60[VERSION 6]
    -> Added support for 6.61 [VERSION 5]
    -> Added support for 09g units to 6.20

    What does it do?
    Allows users who are incontent with their firmware to downgrade to 6.20 using the Sony Updater.

    How do I use it?
    Copy the "PSP" folder to your PSP. The downgrader is "signed" and can be launched from OFW XMB.
    You need to copy the 6.20 update to PSP/GAME/UPDATE/EBOOT.PBP and for PSPgo it must be the eflash it is placed on.
    After setup run the downgrader and follow the onscreen instructions.

    What does it technically do?

    6.20-6.35: It uses the utility/power exploit to gain kernel access and reboots into the updater with a special PRX running.
    This PRX uses the pspdecrypt functionality to decrypt the updater PRX when needed.
    This allows the updater to boot in the newer firmwares.
    6.38/6.39: It uses my http_storage exploit to gain kernel access.
    Basically, http_storage has a vulnerability in it, where I can write -1 to anywhere in memory.
    6.60: Uses sceNetMPulldown to gain kernel access.
    6.61: same as 6.60 (only certloader kexploit is patched in 6.61)
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