I have the same issue with my FAT PSP. I installed mapviewer v5.05b, my board is TA 079/81, GPS-290 and Mapviewer is in my GAME317 folder, I am running 3.71 CFW. I dumped my keys to the ms and analyzed keys with Keycleaner 1.4 and all keys are okay. i still see GPS State OFF in the GPS info screen. put the ms in my co-worker's slim psp TA-085 and plug the gps 290 on his and it all works great. The I hook the ms and the gps-290 back to my unit and GPS State On shows but then goes back to GPS State OFF after a few minutes. Any help would be appreciated.
Last edited by mcbchild; May 10th, 2008 at 03:16.
Try cleaning the metal contacts on either side of the usb port on the PSP. The metal prongs on the receiver might not be making sufficient contact.
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