Question

我PSP现在版本是3.90 M33-3我想刷到3.71 M33-4 怎么办啊

我是很菜很菜那种，新买的，什么工具都不了解，所以方法请详细一些多谢
那我下的那个FC模拟器就用不了，问人家人家说系统版本问题，有办法解决么？

Answer 1

其实我认为 390 没甚麼不好的，至少我现在全部玩过的游戏 390 都能跑， irshell, dos, ons 都能用，唯一怨念就是 iso 不能用中文名字 (还是能玩中文游戏的)

同意 112212zjb 的，的确很复杂，不过危险其实不大 (吧)，还是得说一句：变砖别找我

如果还是要刷的话可以用神电 V3 可以刷到 3.71 m33-2

要有
- despertar_cementerio V3
- msinst.exe
- mspformat.exe
- 1.50, 3.40, 3.71 核心 (*.pbp)
- pandora 0.5 for 390 或 C+D tools
- (年代久远可能有些许出错)

http://www.dark-alex.org/index_psp.php
http://psp.cngba.com/
能找到大部份工具

然后再下 3.71 m33 4 更新吧 (在dark alex)

看得懂就照说明做吧
看不懂上 tgbus/ cngba/ 多玩 搜吧，有翻译版本的
下面是我自己整理的 (只是剪剪贴贴的)

- If you have already a pandora ms, don't do this part. Otherwise,
format an ms using c+d mspformat or any other tool that allows to move
partition to ~250kb from first sector

Remove ms, usb and connect again usb and ms.
Make PSP and PSP/GAME dirs.

- Copy despertar_cementerio to PSP/GAME/

- Download 1.50, 3.40 and 3.71 update eboots and copy them to ms root with
150.PBP, 340.PBP and 371.PBP names.

- Use the app under a cfw with 2.x or 3.x kernel (be sure that kernel is
selected on recovery to the correct one (2.x or 3.x))

- Once finished, u will have msipl.bin on root. If you already have a pandora
ms, you don't have to do this step (ipl doesn't changes lol), otherwise,
use c+d msinst to install ipl on ms; or use dd command from unix, or any
hex-edit program to write on sector 16 on the physical drive.

(msinst 使用说明

1) 将生成好的 msipl.bin 复制到你的 pandora 所在目录的 msinst 目录下
2) 选择“开始”
3) 选择“运行”
4) 输入“cmd”
5) 进入你的 pandora 所在的目录
比如，在 D:\pandora，输入如下命令：
D:
cd pandora\msinst
6) 运行 msinst 加你的记忆卡盘符和 msipl.bin
比如，你的记忆卡盘符为 I 盘，输入：
msinst i i:\msipl.bin)

- Now you can delete 340 and 150 PBP's, as they won't be used more; but 371.PBP
will be used for unbricker, so don't delete it.

- Now you have an universal pandora ms ready to go, and you just need a proper
battery. If you have 1.50 kernel access, use c+d tool. Otherwise, use corly149 tool.

Battery and ms will work on all psp and slims to this date.

Unbricking:

- Press X to install 3.71M33.

- Press O to install original 3.71 (rest of the process as the X option)

- Press [] to dump nand to nand-dump.bin. When done, psp will auto shutdown.

- Press L+R+HOME+start to restore nand from nand-dump.bin

This proccess is very dangerous, and you should *just* use it if it's your
last chance to get it working.

This is a physical restore process (not a logical one), and will try to make
a 100% exact clon of the dump.

If you are working with a dump that isn't yours, you will get either a brick
or a corrupt idstorage, depending on the firmware.

If while you are restoring your psp have got any damaged block more than
when you dumped it, you might also get a brick, depending on what block is it.

Works for both PSP and PSP Slim.

Answer 2

完全没必要刷成3.71M33

除了ISO不能用中文名外3.90M33-3比3.71M33-4强的多
而且现在新游戏还用3.71玩的话,只要你以后升级系统存档就得完蛋
现在用3.71玩某些游戏已经力不从心了,过不了多久就会有3.71玩不了的游戏,到时候你还得升级回来

玩不了更新下FC模拟器就行了,根本不是什么系统问题

Answer 3

用神奇电池刷

方法非常非常复杂,且不说3.9刷到3.7, 你想刷的话还要先把自己的电池做成神奇电池,很麻烦的,神奇电池还玩不了游戏,玩的时候还得还原回普通电池.稍有差错机器就完蛋了...

所以建议你拿去游戏店花20--50元 让他们给你刷,或者拿到买机子的地方让他免费给你刷.

Answer 4

劝楼主一句 这东西 不懂的话别自己弄
去你们当地的PSP电花点点钱
要刷成什么样 什么功能 跟他们说一下就OK
不要因小失大！

Answer 5

上网随便一搜下载个升级文件即可
给你个网址吧
www.lailook.com
psp.tgbus.com