Wait so what happened? Are you saying you overwriten those 2 files in flash0 and now your psp is semi-bricked? If so just just use this to downgrade back to 1.50 and upgrade back to your custom firmware:
http://forums.afterdawn.com/thread_view.cfm/460892
Use the 1.50 winstaller.
If all you need is the files because for some reason you didn't back up your flash0, well someone will have to give you a link to the specific flash0 you need, so please tell us your firmware.
http://forums.afterdawn.com/thread_view.cfm/460892
Use the 1.50 winstaller.
If all you need is the files because for some reason you didn't back up your flash0, well someone will have to give you a link to the specific flash0 you need, so please tell us your firmware.