This was posted on "some other" forum
Maybe this helps you with IRSHELL
Fr0sTy
irshell working!!!
i got irshell working with no umd for 3.90. nothing big really. copied my old irspatch.prx and pspbtjnf.bin (for fat, use pspbtjnf_02g.bin for slim) files from the flash0 of 3.80m33-5 with irshell installed, upgraded to 3.90m33, installed my theme, and dropped those 2 files in the kd folder. works like a charm. hope this helps ppl
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