Update to firmware to 6.35, no higher. Don't just do it through update on the PSP, find the 6.35 firmware online. Find 6.35 PRO B-3. It is a signed CFW which runs in memory until you turn off your PSP. Find and install the remote joy lite plugin.
#7302990, By graz68 Downgrading / Custom firmware thread
graz68 114 posts
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Registered 10 years ago