3.71 M33 by M33=Dark_AleX
Changes in 3.71 M33:
- Now uses 3.71
- VSH Menu is not longer launched using HOME key, but using SELECT now. This is to not
  interfere with the XMB function of home, which is now more useful in this firmware.
- Psp Slim: umdcache was allocating memory even when homebrew was launched, wasting
  memory that homebrew programs may want to use. Now umdcache module is stopped before
  it can allocate any memory, only in the case homebrew is launched.
  Also, memory is unprotected for user memory usage by M33 core (only when homebrew is launched).
  Developer, for a sample of how to use the extra memory, see the extra ram sample of the M33 sdk.
- Both version boot now from 3.XX ipl, and are independent of 1.50.
The main installer will not install 1.50 kernel anymore.
A 1.50 kernel addon for 3.71 M33 that will install inside 3.71 M33 will be released in a
few days (for fat only)
Note: due to some changes in kernel nids by Sony, you can expect a lot of kernel plugins not working anymore.
Programmers: refer to the sdk readme for details.
Installation instructions:
First method for both psp, the prefered when possible:
Requeriments: a fat psp slim with 3.52 M33-3 or 3.52 M33-4. Previous versions of M33 won't work,
due to a bug that affects them and OE; or a psp slim with 3.60 M33.
- Copy the UPDATE directory into /PSP/GAME/UPDATE and copy the EBOOT.PBP of the 3.71 Sony updater
there but with name "371.PBP". Note: the program will not even show if you copy it to a different folder than that.
- If you are in the fat psp, make sure you have configured the psp to run the game folder in the 3.XX kernel.
- Execute the program, it requires 78% of battery. If you have idstorage corrupted due to a downgrader, the program
  will ask you to correct it automatically so the update can continue.
- Press X, and the Sony updater will begin. Sit and enjoy while Sony code installs 3.71 M33
- When finished, the updater will ask you to reboot (pressing X or O). DO IT. Do not skip this step
shutting down the psp by yourself, or you'll end with a brick.
- You should be now in 3.71 M33


Unbricker for both psp slim&fat and 1.50 kernel installer for fat 3.71 M33, will be released in few days... and it will be last thing from me.

刷机准备：1. 装有3.52 M33-3或者3.52 M33-4固件系统的老P，新P只要刷过机的就OK
               2. sony官方3.71固件升级程序
使用方法：
               1. 将update目录拷贝到/PSP/GAME/UPDATE下，并且把sony的3.71updater重命名为"371.PBP"也拷贝到上述文件夹下。
               2. 如果是老P请确认机器跑在3.XX的内核下
               3. 执行刷机程序，当然这需要你的机器有78%以上的电池电量。如果你的机器因为之前的降级造成的idstorage错误，
                   则程序要求你自动进行修正。
               4. 按X开始刷机
               5. 刷机完成后程序会要求你按X或O重启机器，请务必执行，切勿手动关机，否则转头伺候。
               6. 完毕！

几点改动：1. 3.71的系统（抽，废话！）
               2. 现在改用select键调出VSH菜单而非以前的home键
               3. umdcache功能向自制程序开放，意味着自制程序可以使用新P的大内存了（老P的拥有者将来可能会泪流满面）
               4. 新、老P都用3.XX的ipl启动，老自制程序可能无法使用

下载地址：http://m-33.narod.ru/release.rar

OE系列貌似不能，只能到3.52 M33-3或者3.52 M33-4再刷