A little trick: get “Devulated” 2.71 up to 333mhz

Many of you may have noticed the one annoying thing about DevHook: that it freezes when you try to run firmware 2.71 at 333Mhz in the Devhook menu. Although some of you may have already figured this out, IndianCheese has posted a little trick that allows you to run emulated firmware 2.71 using DevHook at 333Mhz without it freezing just by using Ahman's legendary shell application, iR Shell. Here it is:

1. Run iR Shell.
2. Press R+Start repeatedly until the PSP is clocked up to 333mhz (Check the green numbers at the top of the screen).
3. Run Devhook 0.46 through iR Shell.
4. Choose "CPU Speed".
5. Choose 333/166.
6. Choose "Start".
7. The PSP will successfully boot 2.71 firmware clocked at 333mhz.

This workaround is quickest for iR Shell regulars who put their PSP on sleep in iR Shell in order to bypass the PSPs XMB when turning it on, but there is also another workaround. You can just start devhook then hold home and hit select until you get to 333mhz, which also doesn't crash the PSP.

We guess it is because the PSP doesn't like you changing it to 333Mhz when you boot up in 2.71, maybe due to a bit of Sony's security coding during 2.71 startup. Anyhow, either of these 2 methods will enable you to boot up firmware 2.71 in DevHook at 333Mhz without crashing, just use whichever method is quickest for you. Just remember - running your PSP at 333Mhz drains your battery much quicker than at 222Mhz!

Via Inidiancheese

Many of you may have noticed the one annoying thing about DevHook: that it freezes when you try to run firmware 2.71 at 333Mhz in the Devhook menu. Although some of you may have already figured this out, IndianCheese has posted a little trick that allows you to run emulated firmware 2.71 using DevHook at 333Mhz without it freezing just by using Ahman's legendary shell application, iR Shell. Here it is:

1. Run iR Shell.
2. Press R+Start repeatedly until the PSP is clocked up to 333mhz (Check the green numbers at the top of the screen).
3. Run Devhook 0.46 through iR Shell.
4. Choose "CPU Speed".
5. Choose 333/166.
6. Choose "Start".
7. The PSP will successfully boot 2.71 firmware clocked at 333mhz.

This workaround is quickest for iR Shell regulars who put their PSP on sleep in iR Shell in order to bypass the PSPs XMB when turning it on, but there is also another workaround. You can just start devhook then hold home and hit select until you get to 333mhz, which also doesn't crash the PSP.

We guess it is because the PSP doesn't like you changing it to 333Mhz when you boot up in 2.71, maybe due to a bit of Sony's security coding during 2.71 startup. Anyhow, either of these 2 methods will enable you to boot up firmware 2.71 in DevHook at 333Mhz without crashing, just use whichever method is quickest for you. Just remember - running your PSP at 333Mhz drains your battery much quicker than at 222Mhz!

Via Inidiancheese