1. tablets-dev.nokia.com restricted downloads
2. Download PR 1.2 and eMMC content. You’ll need your IMEI
Click tablets-dev.nokia.com restricted downloads
RX-51_2009SE_10.2010.13-2.VANILLA_PR_EMMC_MR0_ARM.bin
RX-51_2009SE_10.2010.19-1_PR_COMBINED_MR0_ARM.bin << Global Release (Will vary depending on which one you download)
3. Move both .bin files to C:\Program Files\maemo\flasher-3.5
4. Turn off N900. Connect MicroUSB cable but not N900. Whilst holding “U” on N900′s keyboard, attach to MicroUSB.
The Nokia logo will appear and a USB icon in top right corner. Do not at any point disconnect the cable or restart N900 until step 9.
5. On the PC, click Start>Run>CMD. You’ll see a black box appear.
6. Type or copy and paste cd\program files\maemo\flasher-3.5
7. Type of copy and paste PR1.2
flasher-3.5 -F RX-51_2009SE_10.2010.19-1_PR_COMBINED_MR0_ARM.bin -f
note, the file name will differ slightly with each PR1.2 regional variant. The above is for global version.
Leave it for a couple of minutes whilst it flashes your N900 with PR1.2.
Wait until it says “CMT Flashed successfully”.
8. Now copy and paste flasher-3.5 -FRX-51_2009SE_10.2010.13-2.VANILLA_PR_EMMC_MR0_ARM.bin -f -R
Wait for it to finish it’s thing.
You’ll know it’s finished when it says “Flashed successfully…..”
N900 will attempt to restart.
9. If N900 hasn’t already restarted, restart it manually. Congratulations, you are now on PR1.2 / Have hard reset N900.