PSP Dark-AleX M33 update stuck at please wait.

Stuck at the “please wait” message?
This (((((( may )))))) fix the problem:

1. Reboot your PSP (Hold Power Button for 5 seconds)
2. Turn on PSP (Power Button)
3. Hold R immediately after Step 2
4. You are now in Recovery Mode, yay
5. Select “Configuration”
6. Select “Game folder homebrew” and keep pressing x
until the kernel version is the same version number
of what custom firmware you are currently running
7. Select “Back”
8. Select “Exit”
9. Now give that Custom Firmware Update another try

This may not work for EVERYONE, so don’t be angry if it
doesn’t, because I let you know beforehand.

Once the whole Custom Firmware Installation is complete, you may notice that your PSP will not run any (non physical) UMD games. To fix this:

1. Go into Recovery Mode
2. Select “Game folder homebrew” and keep pressing x
until the kernel version is 1.50
3. Select UMD Mode and keep pressing x until "M33 driver -NO UMD-)"
is displayed.
4. Select “Back”
5. Select “Exit”
6. Now give those games another try

Got this info from a post by joeman.