Booster has updated his firmware launching tool, DevHook for the PSP to version 0.42 today. For those of you who don’t know (i.e. 2.5/2.6 users who have just downgraded), DevHook allows you to launch another firmware version up to 2.5 and use all of its features, enabling you to use the web browser and LocationFree player, and run UMDs that require firmware version 1.5. The firmware remains loaded in the PSP’s RAM, so after a simple reboot of your PSP, it will return to firmware version 1.5 like magic.

Here’s the changelog:

* Menu looks sharper with a better resolution.
* No UMD bug fix
* UMD Emu’s semaphore bug fix
* Changed Clock reset timing
* Changed contents of configuration data
* Changed loading & setting method from launcher
* Changed the config load at the time of starting into a memory course from a file.
* XMB’s UMD change feature is now in an external module.
* Added a CLOCK change function to the XMB shortcut.
* Clock frequency is displayed on the XMB
* Remote control compatibility with Kprintf.
* Added Japanese localization launcher version by mok

Todo:

* FW2.00 No-UMD loading
* FW2.71 reboot
* NAND driver emulation

Most of these changes are to the core of DevHook, and they improve the stability and compatibility of this program. The main differences the average user will spot are the menu resolution enhancements and the addition of Remote control compatibility with Kprintf. Those who have downgraded from 2.5-2.6 now know why 1.5 is known as ‘the magic firmware.’ You can do almost anything with it: defy the Update Machine; play 2.5 UMD’s; and, browse the Web with 1.5 Firmware!

Read more here PinoyPSP

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