Homebrew issues with 80020148 error

Hope this helps:

80020148 - Unsupported PRX type | This error also seems to appear when you are running an iso with a fake mem.
-Upgrade to a newer custom firmware, or u are using official firmware and u need to downgrade then install CF.
-If not, it is probably a config error/bug and 99% of the time it will be fixed if u "delete flash1 and reset settings" in Recovery>Advanced.
-Often occurs when upgrading from a older OE/SE to M33.
-can also be bad/corrupt iso
-can be from not having 1.5 addon installed when running some homebrew(fat only)
-can be fake memcard.
-also occurs with older SE/OE firmware if u have umd mode set to M33 driver(fixed by changing to sonynp9660 or put in a umd)
-also can be fixed by upgrading to 3.52M33 from older CF.
but most of the time it is a upgrade bug in flash1.

Also all homebrew must be installed in the PSP\GAME150 folder