- Download, Extract, Copy: folders, 'OFW' and 'Chronoswitch', to PSP storage.
- Boot: Chronoswitch (CHRONOSWITCH folder). X to proceed. X to continue. X to start updater.
- Start OFW update (UPDATE folder).
"A later version of the system software is already installed. There is no need to update."
- Copy version.txt into...
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Source: https://gbatemp.net/threads/install-psp ... re.468844/