http://forums.maxconsole.net/showthread.php?t=69214

引用:

A group of russian hackers have released a new PSP custom firmware which have got a lot of people rather excited. A few users seem to confirm it working but as per usual, only try such releases at your own risk. Help spread the word and DIGG THIS STORY

Summary of features offered by CFW v3.51 M33

- All functions of v3.51 firmware retained - PS1 support, high video resolution, MP3 visualizer, internet navigation, PS3 connection etc
- Launch official UMDS which require v3.51 firmware
- Direct launching of ISOs/CSOs
- Direct launching of homebrews and demonstrations
- Direct launching of PS1 images
- Ability to alter the CPU speed of the PSP
- Recovery mode
- Multi-region
- Bugfixes
- Customize all your icons etc

Instructions by Cocosman

Insructions:

1 - If your PSP is in firmware 1.50, copy the folders kxploitpatcher and kxploitpatcher% which are in the "1.50only" folder to ms0:/PSP/GAME/ and run the patcher first.

2 - if you already have firmware SE/OE, copy the folder M33CREATOR to ms0:/PSP/GAME150 if you have 1.50 copy to ms0:/PSP/GAME

3 - Download the firmware update 3.51 and rename to 351.PBP and copy into the ms0:/PSP/GAME/M33CREATOR/ or for 1.50 users to ms0:/PSP/GAME150/M33CREATOR/

4 - Download the firmware update 1.50 and rename to 150.PBP and copy into the "ms0:/PSP/GAME/M33CREATOR/" or "ms0:/PSP/GAME150/M33CREATOR/"

5 - on your PSP, run the "3.51 M33 CREATOR". Once finished, the PSP will return to the XMB, and a new program, the "3.51 M33UPDATE" appears!

6 -now run "3.51 M33UPDATE".

7 - Once finishes, press on X to shutt off. Restart manually.

俄罗斯的M33小组反编译了DA的OE系统以后开发的3.51版自制系统，很多人测试了还不错

不是说3.51 M33相对3.40OE没有什么大改进么，现在有了：
7月18日更新了M33的免盘补丁，打上补丁以后，M33就增加了一种免盘模式，该模式灵感来自于SONY 3.51官方固件中的ISO LOADER。使用这种免盘方式，GTA、怪物猎人等以前不能免盘的游戏都能免盘了。

http://forums.maxconsole.net/showthread.php?t=69635

引用:

This update adds a new no-umd mode, it also is accumulative, so it adds the previous wlan fix if you have not applied it.

The use noumd config in recovery has been changed to UMD Mode. There are 3 options:
1. Normal -> this is the normal one that requires an UMD.
2. OE isofs legacy -> this is the OE noumd, that will be still kept at the moment.
3. M33 Driver -> this is the new NO-UMD mode added in this update.

To install, copy folder noumdm33 into ms0:/PSP/GAME150/ and use it.

The compatibility of new mode has still to be more tested, but we have seen that some games like GTA LCS and Xyanide Resurrection that didn't work in the old mode, work now.
This new mode doesn't use the sony iso loader, but it is inspired by it.

-- M33 Team

M33小组再次更新了3.51M33的补丁M33-6，这次又增加了一种免盘模式。他们成功为3.51系统官方中SONY开发的ISO LOADER（np9660）打上了补丁，国外测试貌似免盘兼容性达到100%了？

http://forums.maxconsole.net/showthread.php?t=69925

引用:

Release Notes:

This update introduces a new no-umd more: the famous sony np9660.
The compatibility of this mode is not yet known, let's hope sony codes well  
Remember to choose "Sony NP9660" in recovery to use this new mode

[ 本帖最后由 kurara 于 2007-7-20 10:46 编辑 ]

刷完鸟，功能和OE系统完全一样

SONY斩草没除根

斩草除根？可能吗

等新出的游戏玩不了再刷

DA之前的N多‘前辈’难道你们忘记了么:D

功能很好很强大

很好啊,很强大嘛

游戏兼容性说说怎么样

支持了3.40以上的游戏ISO，至于免盘兼容性和以前还是一样。DA未开发完的100%免盘版本可惜了

刷完了，不错的。。。

看口碑还不不错...............:D

有具体点的对比评测嘛？？

要中文的说

就目前来说刷的意义并不大
因为游戏兼容性方面并没什么太大的提高

比如最新的那个邪恶麻将，3.51 M33的话就能直接运行ISO了，3.40OE要压成CSO才能运行

嘛，反正自定义固件出新版就刷，没有坏处，就算等下去也没好处，迟早会出3.51才能运行的游戏