From noobz.eu : Improved down & Hen for 2.80 (noobz.eu) - 3.03 GTA Exploit Downgrader (noobz.eu)
一条来自dark-alex官方网站的消息，证实了可以用gta从３.０３版本降级

http://noobz.eu/

v3.03 Downgrader
After much work over the past few days, we finally succeeded - we have an easy-to-use downgrader for v3.03 PSPs!

Some ground-rules:

This downgrader is for v3.03 firmware only. But if you have v2.81 - v3.02, no problem - you can just upgrade to v3.03 to use the downgrader.
You need a copy of the unpatched GTAiberty City Stories UMD. No ISOs, no patched UMDs, not Vice City Stories. See here for some info on how to check if your version is patched. The most reliable way : the unpatched disks have the v2.0 firmware update on them.
This downgrader is intended to enable homebrew. Homebrew is NOT the same as piracy. Don't be a thieving loser - buy the games you play.
The downgrader will work on all current PSP hardware (TA-079 - TA-086). Patching of TA-082+ is automatic in the downgrader.
You downgrade at your own risk. There is always a chance of bricking, although we have done everything we can think of to make this process safe.
Full instructions for downgrading are included in the Downgrader_HOWTO.txt file in the ZIP file. Read them carefully! You will need:

The 3.03 downgrader package
Official v1.50 Firmware Update EBOOT
Official v3.03 Firmware Update EBOOT (only if your PSP is not 3.03 already)
Enjoy! You can get support for any problems at the PSPUpdates forum.

Remember to check out the PSP Homebrew Database for information on homebrew that can be run on your newly-downgraded PSP!

[ 本帖最后由 ages7mark 于 2007-1-29 08:33 编辑 ]

沙发，鸟语不懂，谁翻译下先。

无敌了

有没有中文的攻略！ ？

重点翻译

这个降级程序只有3.03版才能用.但如果你的PPSP是2.81-3.02的版本, 没问题~~ 你可以升到3.03再降下去

哭，GTA有3.03机器没有。

我就是3.03, 要美版的gta吗！？ 今天去买！

要2.0的自由城，就是以前2.5 2.6降级用的那种

哪位贴个封面！？  谢谢

恩，马上拍:D

谢谢ls兄弟了！　今天又要放血了！　

硬降时代全面结束？

我这个是美版的，还有欧版的2.0GTA自由城故事也可以。




[ 本帖最后由 冒牌天神 于 2007-1-29 09:37 编辑 ]

这样的话,目前世界上没有不能软降的机器了

必须用最老那个的,新的好像不行.