I deleted the dh folder, plus I need a good cheat device

I have recently updated from 1.50 to 2.71 SE-B (the one with UMD/ISO support on the XMB) but I have deleted the dh folder after installing SE-B on my PSP, since I wanted to free some space for some ISOs, nothing has happened so far, but is this bad?

Also:
Does anyone know a good cheat master that works on 2.71 SE-B, and for breath of fire 3?

flash the cheatmaster prx with the 2.71_gamecbntf.txt

Ive searched for cheat master but it keeps giving me game shark appliances and code breaker things, wheres the download to the app?
And where can the .txt file be found on my mem stick?