6.38/6.39 Downgrader to 6.20/6.35（更新v3.5）

月神侠

http://wololo.net/talk/viewtopic.php?f=26&t=6403

I present to you my port of Davee's 6.35/6.31 downgrader to 6.39/6.38.

This a very simple app, just put the official 6.20 updater in (ms0/ef0 accordingly)PSP/GAME/UPDATE, and run the downgrader, this will reboot into the 6.20 "update", and allow you to downgrader to 6.20. Has been tested on 1k, 2k, 3k, and Go (added support for 07g/09g).

I will be releasing the source on May 29th.

Thanks:

Spoiler To Davee for making the original 6.35/6.31 downgrader
To ultimakillz and skyend for being my mentors when I first entered the scene.
To n00b81 for teaching me a lot of things.
To Davee, Freddy, TheLemonMan, Hellcat, and Draan for answering any question's I've had.
To TiPi and Nymphaea for allowing me to work on their VSH sploit, which gained me alot of knowledge and experience.
To Npt for hosting such an awesome competition!
To Arnold, for fixing things here and there.
To All the people who beta tested!
To TiPi for the awsome icon0.
And to many others that I'm probably forgetting.

v3.5 Download: http://www.mediafire.com/?i8ae1j3xdxpshwj
v3.1 Download: http://www.mediafire.com/?jfavewhvu85jrz2
v3 Download: http://www.mediafire.com/?hhvqimvthbtrvis
v2 Download: http://www.megaupload.com/?d=0VBRZ8ZN
v1 Download: http://www.megaupload.com/?d=ZYEU7KFI

v2: 09g/07g support added.
v3: added support for 6.39, added model printer
v3.1: Fixed idiot bug for 6.38 I created when adding 6.39
v3.5: If the 6.20 updater MD5 check fails, it will check if the update file is 6.35, allowing non 07g/09g to downgrade to 6.35, added source, removed a few debug printf's

Instructions:

If you have anything lower than an 07g place the 6.20 update in PSP/GAME/UPDATE.
If you have an 07g or an 09g, place the 6.35 update in PSP/GAME/UPDATE.

No screenshots added because it's only text (splash screen as pic1).

Important note: You run the application at your OWN risk. I am not held accountable if you fuck up your PSP.
Another important note: After you downgrade to 6.20, you will get a BSOD (saying that your system information is corrupted), this is OK, just click circle to reset your system information and you will be back to normal.

Final important note: It does indeed still support 6.35/6.31

Links:

6.35 update: http://www.psp-hacks.com/file/2036
6.20 update: http://www.psp-hacks.com/file/1855
6.20 Go: http://www.mediafire.com/?l96b6wm3b92dwzp

注意事项

1.使用该降级程序，请务必保证PSP是6.31/6.35/6.38/6.39系统，否则无法进行降级。
如果你的PSP的系统是6.30、6.36，请先升级至6.31/6.35/6.38/6.39系统再进行降级。

2.降级前先确认PSP的主板，这里提供一个已经签名过可以在官方系统下运行的主板检测软件。
下载：点击进入

将其中的test01文件夹放到PSP/GAME文件夹下，断开USB，游戏列表中选择对应的主板检测程序进入。
进入后，PSP Module这一项显示得就是主板类型。

低于06g（含06g）主板可降级6.20系统；
07g/09g主板只能够降级至6.35系统；
08g主板作者没有提到未确认。


3.降级过程中，最好保证电量充足，保险的方法是：降级的过程中是插上电源以免突然断电导致变砖。
有条件也可先格式化一下记忆棒。

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操作步骤

下载：
V3.1版降级程序下载：点击进入 （如无特殊需求直接使用该版即可）
V3版降级程序下载：点击进入
V2版降级程序下载：点击进入
V1版降级程序下载：点击进入（以下请根据降级版本、PSP机型选择下载）
降级6.20需用6.20官方系统下载：PSPGO机型用 非PSPGO机型用
降级6.35需用6.35官方系统下载：PSPGO机型用 非PSPGO机型用


降级过程：
1.找到降级程序压缩包内的63x Downgrader文件夹，将其放到PSP/GAME文件夹下
找到官方系统压缩包内的UPDATE文件夹，同样将其放到PSP/GAME文件夹下

2.确认是6.31/6.35/6.38/6.39系统的环境下，选择进入游戏列表中的6.38Downgrader图标

3.进入后稍等一会，按照提示按X加载“降级程序”

4.再稍等一会，如果成功会进入一个官方系统的升级程序，一切按照提示中文操作来“升级”，然后就会升级读取进度条了

5.读取进度条完毕，按提示按键重启

6.降级完成重启后，会遇到如图所示的蓝屏提示，这是系统升降级导致的Flash1的混乱，按照图中的提示按O键格式化Flash1即可。


7.这时再开机会提示重新设置时区之类，属正常现象。这时再去查看主机设定-系统信息就已经是对应的系统版本了

8.当然，6.20/6.35官方系统还需要安装自制系统才能够进行玩盗版ISO、运行自制软件、使用插件等操作，这里就不提供教学之类的了。

推荐安装系统6.20PRO/6.35PRO。

月神侠

更新v3版了~

月神侠

v3.1了~

月神侠

v3.5了~