Here are the steps; Step 1: Maemo flasher-3.5exe > Open it up > type; flasher-3.5 -F RX-51_2009SE_1.2009.41-1.VANILLA_PR_EMMC_MRO_ARM.bin -f -R Step 2: it will say "device not found"; plug the usb in the N900 - wait until "Nokia" comes up then proceed to the next step Step 3: type the next command; flasher-3.5 -F RX-51_2009SE_1.2009.42-11_PR_COMBINED_MR0_ARM.bin -f -R Last step: you will see your N900 starting like out of the box. (LINK TO THE FLASHER, IF YOU DON'T HAVE IT)