Here you go guys, homebrew coder GENyUS has finally released the Popsloader compatible with Custom Firmware 5.50GEN-A. Now you can enjoy more PSX games on your on your latest CFW.
To install the Popsloader 5.50GEN:
Download Popsloader for 5.50GEN in the link below
Connect your PSP to your computer via USB
Downloaded file and extract
Go to the folder "SEPLUGINS" on your PSP.
Open the file "POPS.txt" (create it if it does not exist) and add the following line: ms0: / SEPLUGINS / popsloader.prx 1
Activate the plugin from Recovery
The dev also reminds the users that if you already have a Popsloader 5.00 installed, you can overwrite the old version by installing it. This should work without any hitch
Popsloader 5.50GEN:
http://dl.qj.net/Popsloader-5.50GEN-PSP-Homebrew-Applications/pg/12/fid/27247/catid/151