This is the one from China (L) CFW. 635PRO as an enhanced version of it has XMB ISO display.
Features:
Support all types of PSP, which PSP-1000, PSP-2000, PSP-GO is strictly tested
Support the unlock 52MB of memory, has reached the level of the times 5xx
The NP9660 has a built-in and March33 ISO driver to support more games
XMB ISO has indicated support for ISO & CSO
Has nodrm engine, support for direct reading of the DLC and the decrypted EDATA / PGD file
With VSH MENU, you can view or change system settings, etc.
Redesigned NID Resolver, support more home-made software, including CMFr21c
Has a variety of patches, such as brightness and video resolution four other patches
Support version.txt, put it in ms0: / seplugins / version.txt to take effect
Installation:
FW <635 users, the first official firmware upgrade to 635.
FW = 636 users, using the 636PRO + version.txt downgraded to 635.
Use 635PRO (HEN) into the “635PRO-A Updater”, press the X button to start the installation
After successful installation, you can run “635PRO-A Fast recovery”, directly to revert 635PRO-A.
Note:
635PRO-A downgrade 6.20 is not supported, if necessary, downgrade using the 635 Davee device.
Future Prospects (635PRO-B):
PS1 games will support the self-made
Will support the Recovery Menu
Thanks:
neur0n and booster of the satelite code
Davee’s 635 device in the downgrade exploit code, the use of $ v1 are power_buf_address
Total_noob the skip gameboot patch
Dark_Alex of the galaxy and march33 ISO drive, and usbdevice.prx
kirk-engine all the members of the project, so that we no longer need the game Vulnerability