Hackers Davee, xyz, yifanlu, as well as PSP/Vita scene Veteran EmuOnPSP, nvsofts , and v9938 have started looking into the device. Allegedly, v9938 was able to dump the firmware, with some parts still encrypted. The Japanese hacker also shared information on how the dump was achieved.
http://wololo.net/2018/12/04/famous-...-happens-next/
http://wololo.net/2018/12/04/famous-...-happens-next/
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