事先声明：我只负责翻译，用之前要有觉悟，变砖头别找我，也别找我当小白鼠，我一台是1.5一台是2.71，没必要降级也没法测试
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這是 Dark_AleX 公佈的，不是開玩笑的
檔案大了點，要9.5MB，請至這裡 領取降級程式
有需要的人，風險自負~
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PSP 2.5/2.6 降级程序第四版 发布
PSP 2.5/2.6 降级程序第四版(Downgrader Test v0.4 For PSP 2.50/2.60 Firmware)发布,新版本的变动:
- Mkdir加入
- 加入了一些安全检测
- 移去了所有显示功能
- 移除了对AC adaptor的检测
- 其它的修正
下载: PSP 2.5/2.6 降级程序第四版
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注意1：
ta-082的psp不能使用这个程序，只有由低版本升到2.5/2.6的psp可以，说白了就是出厂就是2.5/2.6的psp不能降级
注意2：
降级程序需要z版gta+eloader，还需要配合一台1.5版的psp使用（2.0降级到1.5的psp也可以），因为2.5/2.6+gta不能直接用gta+eloader的方法运行downgrader，所以需要使用一台1.5的psp运行downhelper这个程序，将psp firmware update 1.5修改，生成一个经过修改的用于2.5/2.6的升级文件
使用方法
1：格式化msd
2：将1.50 helper目录里的downhelper和downhelper%两个文件夹复制到msd:/psp/game下
3：将sony官方psp firmware update 1.5的eboot.pbp更新程序复制到msd:/psp/game/update下
4：用1.5的psp运行downhelper程序，运行结束后会在msd根目录生成一个downdater文件夹，这就是经过修改的用于2.5/2.6的升级文件
5：删除msd:/psp/game/update文件夹
6：downgrader文件夹里的pbp就是用于2.5/2.6的降级程序，根据你要降级的psp版本选择对应的downdatertest pbp
2.5使用downgrader/2.50/downdatertest，2.6使用downgrader/2.60/downdatertest
7：将eloader里的两个文件夹复制到msd:/psp下，冒充gta的save
8：确认2.5/2.6的psp电池电量在80%以上，并接好电源
9：放gta的umd开机，运行eloader
10：用eloader运行downdatertest，downdatertest会自动调用downgrader
11：注意！psp屏幕上不会有任何显示，但msd指示灯会闪，这说明psp正在降级，请耐心等候直到指示灯停止闪烁
12：指示灯停止闪烁后，等至少1分钟再重启psp
13：如果你运气好的的话，你将会得到1.5的psp，如果你缺乏一点运气的话，你将还是2.5/2.6，如果你有rpwt，你的psp将变成sony牌板砖
附：sony官方psp firmware update 1.5下载
http://shockzone.free.fr/PSP/Tool/EBOOT_1.50.zip
eloader下载
http://www.fireemblem.net/cjb/xg/tools/psp/eloader.zip
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downgrader第二版出来了，不过只有源代码
http://game.jun4rui.com/jup/data ... r_PSP_2.50+2.60.rar
本座在2003r2上编译了一下，感觉除了2.5/2.6通用外，没什么新要素
编译后的pbp文件下载
http://www.fireemblem.net/cjb/xg/tools/psp/downgrader02.zip
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To be used at your own risk. It is an UNTESTED software!
NOTE: This should NOT be used on TA-082 hardware!
This is an *experimental* downgrader for 2.50/2.60. Experimental means here that it has not been tested on a real device, although it has a theoretical base that it could work.
This software is free and untested, and i'm not responsable if it causes damages to your PSP. If you use this software, you agree that you are using this program at your own risk and that you won't blame the author for that.
"Someone told me that a downgrader for 2.50/2.60 was impossible. How does this work?"
This one uses another more risked technique (and i repeat: untested) than the MPH downgrader. It uses some sony libraries found in the 1.50 updater to perform the most critical steps, the logical format of the flash, and the ipl writing. See technical details for more info about how it works.
This software requires that someone with a 1.50 runs a little program and send you the output so you can init the downdate process. The 1.50 program is TOTALLY safe, it only dumps the flash of a 1.50 user and it also extracts some special prx's found in the 1.50 updater.
If you do not wish to have someone with a 1.50 do it for you, you can use the included MS_ROOT folder with the files in it instead. Inside is the "DOWNDATER" folder you can use with a 2.50/2.60 PSP to test the downgrade.
Instruction for the 1.50 user
-----------------------------
1) Copy the folders downhelper and downhelper% from the folder 1.50 HELPER folder to
/PSP/GAME/ in your memstick.
2) Obtain the 1.50 update EBOOT and put it in /PSP/GAME/UPDATE in your memstick.
3) Init the downhelper program.
It will dump your flash and some files from the updater eboot to the memstick.
4) After that, the program will exit. You can now delete the updater from /PSP/GAME/UPDATE
5) You'll notice that you have a new folder in the root of your memstick called "DOWNDATER". That's the folder you'll have to send to a 2.50/2.60 to let him test the downgrade.
Instructions for the 2.50/2.60 user
-----------------------------------
1) Copy the folder the DOWNGRADER/2.50/DOWNDATERTEST if you have 2.50
or DOWNGRADER/2.60/DOWNDATERTEST if you have 2.60 to /PSP/GAME/ in your memstick
2) Wait someone with 1.50 to pass you a folder called DOWNDATER and copy it to the root of your memstick.
3) Init GTA and the GTA Loader
4) In the GTA Loader menu, choose the downdater test. WARNING: the program won't output any display and any warnings, it will init the downgrader process inmediatelly.
5) You'll see the your memstick flashing. That means that your PSP is being flashed from the memstick.
You won't see any type of output in the screen (this is for safety). When the memstick finishes of flashing, WAIT at least a minute, and then reinit your PSP by holding the power button.
6) That's all. If all went right, you'll have 1.50. If it went less good, you'll still have 2.50/2.60. If all went wrong, you'll have a broken PSP (except in the case you have the mod-chip) Remember that you have accepted that risk.
Technical details
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This program performs the following operations.
- It loads the ipl_update.prx and lflash_fatfmt.prx from the 1.50 updater.
- It performs a logical format of the flash0 partition using the function
sceLflashFatfmtStartFatfmt found in the lflash_fatfmt.prx
- It writes a dump of the 1.50 flash0 to the flash0.
- It writes the Initial Program Loader (Ipl) using the functions sceIplUpdateClearIpl
and sceIplUpdateSetIpl from the ipl_update.prx module. The ipl is embedded in that module.
Other considerations:
--------------------
- Users with TA-082 psp's shouldn't try this. Also, it may be better that at the beginning, only users with a 2.50/2.60 NOT from factory (they updated from a below firmware) try this.
-Dark_AleX
[ 本帖最后由 月神侠 于 2006-7-1 14:23 编辑 ] |
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发表于 2006-6-29 12:42:13
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