swiver is a PSP homebrew that allows you to switch (spoof) your PSP's current version.txt to any version's (1.00-6.61) version.txt automatically.
It can be used to fix the "The system version of your PSP™ system version is 9.90. There is no need to update" issue on 5.50 CFW.
It also takes a backup of your original version.txt so if something goes wrong for some reason, you can just rerun the program and restore the backup easily.
- reha and PonpiK of Cat Magic Spell for leading the project and testing.
- Coldbird, Virtuous Flame (aka Liquidzigong) and members of Team PRO for the PRO CFW