Today maku140 has shared a video demonstrating a PSP Hello World demo game Savedata Exploit for 6.20 Firmware.
Similar to other recent PSP Exploits, this usermode one is not yet publically released and chances are it may not be unfortunately.
To quote from the video's caption:
"Hello World for PSP firmwares 6.20. This exploit works in Demo version !! Thanks to wololo and mamosuke."
Those interested can check out the video demo below!
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