刷机工具以及固件文件下再地址见文章末尾。
首先安装刷机工具maemo flasher，然后下载固件，固件分以下两个文件，下载地址https://aosp.me/NokiaN900/index.html
- emmc(vanilla)
- firmware(combined)
切记，先刷emmc再刷firmware，并且两次刷机中间不可以开机。
将手机关机，然后按住键盘上的u键，再用数据线将手机链接电脑，这是手机会显示NOKIA字样界面，并且右上角显示有USB图标，即进入刷机模式。
首先写入EMMC文件，命令如下flasher-3.5 -F emmc.bin -f，以下为linux下操作实例，以供参考
alair@zb14:~/下载$ sudo flasher-3.5 -F RX-51_2009SE_10.2010.13-2.VANILLA_PR_EMMC_MR0_ARM.bin -f
[sudo] alair 的密码：
flasher v2.5.2 (Oct 21 2009)
Image 'mmc', size 255947 kB
Version RX-51_2009SE_10.2010.13-2.VANILLA
USB device found found at bus 002, device address 012.
Found device RX-51, hardware revision 2204
NOLO version 1.4.14
Version of 'sw-release': RX-51_2009SE_21.2011.38-1_PR_MR0
Booting device into flash mode.
Suitable USB device not found, waiting.
USB device found found at bus 002, device address 013.
Raw data transfer EP found at EP2.
Image(s) flashed successfully in 27.304 s (9373 kB/s)!
然后断开链接，取出电池，重新将电池放入再次刷机模式链接电脑，下来写入firmware文件，命令flasher-3.5 -F firmware.bin -f -R，以下为Linux操作实例，以供参考。
alair@zb14:~/下载$ sudo flasher-3.5 -F RX-51_2009SE_20.2010.36-2_PR_COMBINED_MR0_ARM.bin -f -R
flasher v2.5.2 (Oct 21 2009)
SW version in image: RX-51_2009SE_20.2010.36-2_PR_MR0
Image 'kernel', size 1705 kB
Version 2.6.28-20103103+0m5
Image 'rootfs', size 185728 kB
Version RX-51_2009SE_20.2010.36-2_PR_MR0
Image 'cmt-2nd', size 81408 bytes
Version BB5_09.36
Image 'cmt-algo', size 519808 bytes
Version BB5_09.36
Image 'cmt-mcusw', size 5826 kB
Version rx51_ICPR82_10w08
Image '2nd', size 14720 bytes
Valid for RX-51: 2217, 2218, 2219, 2220, 2120
Version 1.4.14.9+0m5
Image 'xloader', size 14848 bytes
Valid for RX-51: 2217, 2218, 2219, 2220, 2120
Version 1.4.14.9+0m5
Image 'secondary', size 109440 bytes
Valid for RX-51: 2217, 2218, 2219, 2220, 2120
Version 1.4.14.9+0m5
Image '2nd', size 14720 bytes
Valid for RX-51: 2101, 2102, 2103
Version 1.4.14.9+0m5
Image 'xloader', size 14848 bytes
Valid for RX-51: 2101, 2102, 2103
Version 1.4.14.9+0m5
Image 'secondary', size 109440 bytes
Valid for RX-51: 2101, 2102, 2103
Version 1.4.14.9+0m5
Image '2nd', size 14848 bytes
Valid for RX-51: 2307, 2308, 2309, 2310
Version 1.4.14.9+0m5
Image 'xloader', size 14848 bytes
Valid for RX-51: 2307, 2308, 2309, 2310
Version 1.4.14.9+0m5
Image 'secondary', size 109440 bytes
Valid for RX-51: 2307, 2308, 2309, 2310
Version 1.4.14.9+0m5
Image '2nd', size 14848 bytes
Valid for RX-51: 2407, 2408, 2409, 2410
Version 1.4.14.9+0m5
Image 'xloader', size 14848 bytes
Valid for RX-51: 2407, 2408, 2409, 2410
Version 1.4.14.9+0m5
Image 'secondary', size 109440 bytes
Valid for RX-51: 2407, 2408, 2409, 2410
Version 1.4.14.9+0m5
Image '2nd', size 14848 bytes
Valid for RX-51: 2301, 2302, 2303, 2304, 2305, 2306
Version 1.4.14.9+0m5
Image 'xloader', size 14848 bytes
Valid for RX-51: 2301, 2302, 2303, 2304, 2305, 2306
Version 1.4.14.9+0m5
Image 'secondary', size 109440 bytes
Valid for RX-51: 2301, 2302, 2303, 2304, 2305, 2306
Version 1.4.14.9+0m5
Image '2nd', size 14848 bytes
Valid for RX-51: 2401, 2402, 2403, 2404, 2405, 2406
Version 1.4.14.9+0m5
Image 'xloader', size 14848 bytes
Valid for RX-51: 2401, 2402, 2403, 2404, 2405, 2406
Version 1.4.14.9+0m5
Image 'secondary', size 109440 bytes
Valid for RX-51: 2401, 2402, 2403, 2404, 2405, 2406
Version 1.4.14.9+0m5
Image '2nd', size 14720 bytes
Valid for RX-51: 2104, 2105, 2106, 2107, 2108, 2109, 2110, 2111, 2112, 2113, 2114, 2115, 2116, 2117, 2118, 2119
Version 1.4.14.9+0m5
Image 'xloader', size 14848 bytes
Valid for RX-51: 2104, 2105, 2106, 2107, 2108, 2109, 2110, 2111, 2112, 2113, 2114, 2115, 2116, 2117, 2118, 2119
Version 1.4.14.9+0m5
Image 'secondary', size 109440 bytes
Valid for RX-51: 2104, 2105, 2106, 2107, 2108, 2109, 2110, 2111, 2112, 2113, 2114, 2115, 2116, 2117, 2118, 2119
Version 1.4.14.9+0m5
Image '2nd', size 14848 bytes
Valid for RX-51: 2501, 2502, 2503, 2504, 2505, 2506
Version 1.4.14.9+0m5
Image 'xloader', size 14848 bytes
Valid for RX-51: 2501, 2502, 2503, 2504, 2505, 2506
Version 1.4.14.9+0m5
Image 'secondary', size 109440 bytes
Valid for RX-51: 2501, 2502, 2503, 2504, 2505, 2506
Version 1.4.14.9+0m5
Image '2nd', size 14848 bytes
Valid for RX-51: 2607, 2608, 2609, 2610
Version 1.4.14.9+0m5
Image 'xloader', size 14848 bytes
Valid for RX-51: 2607, 2608, 2609, 2610
Version 1.4.14.9+0m5
Image 'secondary', size 109440 bytes
Valid for RX-51: 2607, 2608, 2609, 2610
Version 1.4.14.9+0m5
Image '2nd', size 14848 bytes
Valid for RX-51: 2507, 2508, 2509, 2510
Version 1.4.14.9+0m5
Image 'xloader', size 14848 bytes
Valid for RX-51: 2507, 2508, 2509, 2510
Version 1.4.14.9+0m5
Image 'secondary', size 109440 bytes
Valid for RX-51: 2507, 2508, 2509, 2510
Version 1.4.14.9+0m5
Image '2nd', size 14720 bytes
Valid for RX-51: 2201, 2202, 2203, 2204, 2205, 2206, 2207, 2208, 2209, 2210, 2211, 2212, 2213, 2214, 2215, 2216
Version 1.4.14.9+0m5
Image 'xloader', size 14848 bytes
Valid for RX-51: 2201, 2202, 2203, 2204, 2205, 2206, 2207, 2208, 2209, 2210, 2211, 2212, 2213, 2214, 2215, 2216
Version 1.4.14.9+0m5
Image 'secondary', size 109440 bytes
Valid for RX-51: 2201, 2202, 2203, 2204, 2205, 2206, 2207, 2208, 2209, 2210, 2211, 2212, 2213, 2214, 2215, 2216
Version 1.4.14.9+0m5
Image '2nd', size 14848 bytes
Valid for RX-51: 2601, 2602, 2603, 2604, 2605, 2606
Version 1.4.14.9+0m5
Image 'xloader', size 14848 bytes
Valid for RX-51: 2601, 2602, 2603, 2604, 2605, 2606
Version 1.4.14.9+0m5
Image 'secondary', size 109440 bytes
Valid for RX-51: 2601, 2602, 2603, 2604, 2605, 2606
Version 1.4.14.9+0m5
Suitable USB device not found, waiting.
USB device found found at bus 002, device address 016.
Found device RX-51, hardware revision 2204
NOLO version 1.4.14
Version of 'sw-release': RX-51_2009SE_21.2011.38-1_PR_MR0
Sending xloader image (14 kB)...
100% (14 of 14 kB, avg. 3625 kB/s)
Sending secondary image (106 kB)...
100% (106 of 106 kB, avg. 15267 kB/s)
Flashing bootloader... done.
Sending cmt-2nd image (79 kB)...
100% (79 of 79 kB, avg. 13250 kB/s)
Sending cmt-algo image (507 kB)...
100% (507 of 507 kB, avg. 29860 kB/s)
Sending cmt-mcusw image (5826 kB)...
100% (5826 of 5826 kB, avg. 36645 kB/s)
Flashing cmt-mcusw... done.
Sending kernel image (1705 kB)...
100% (1705 of 1705 kB, avg. 6742 kB/s)
Flashing kernel... done.
Sending and flashing rootfs image (185728 kB)...
100% (185728 of 185728 kB, avg. 16144 kB/s)
Finishing flashing... done
CMT flashed successfully
刷机完成后，手机自动重启。