To download this ROM upgrade, click HERE. Instructions follow below.
X800 OS version 402 update notification
OS Bugs fixing and new feature:
- Fix the device reset occasionally problem.
- Fixed Security Pin code lost problem.
- Support SDHC function.
- Fixed system doesn’t show H icon when HSDPA is working. (Please update 3G firmware)
- Improve Video Call stability.
- Fix the problem of Satellite Data Update which when the update is finished, the GPRS is still connected.
- Improve the connection stability of Bluetooth.
- Improve the stability of FM Tuner application.
- Modify the connection Wizard version.
- Improve part of Call Filter function.
- Improve the stability of Namecard Manager.
- Improve the battery meter accuracy.
X800 OS update notification:
Required files:
1. EUU_X800_XXX_A42_040_0402_XP.EXE (XXX stand for language version) or
EUU_X800_XXX_A42_040_0402_Vista.EXE
2. ModemUpdater_FC3301_CA.zip (This is update file for 3G firmware)
Update procedure:
Please update X800 OS version 402 first, then update 3G Firmware Update
Normal operation items:
OS Update:
Make sure use PC with XP system (better with service pack2) or Vista for OS updating.
- Disable all kind of firewall before OS updating.
- Be sure your PC or laptop already installed ActiveSync 4.5 or above version
- Be sure the USB cable is properly connected between PC and Cradle.
- Connect X800 and your PC via USB cable and be sure the ActiveSync is activated with GREEN sign.
- If Activesync is hard to connect, you can go start/setting/connection/ USB to PC and disable the “advanced network functionality”, then Activesync would be easily connecting.
- Please backup all necessary data on PC side before OS updating process.
- Be sure the power adapter is properly connection during the updating process.
- Run EUU file and following the instructions show on screen to complete OS updating.
3G Firmware Update
- Extract the file “ModemUpdater_FC3301_CA.zip”
- Copy ModemUpdater_FC3301_CA.exe to your X800
- Double click ModemUpdater_FC3301_CA.exe
- Follow on-screen instruction to complete the update.
- Reset X800.
- Go to Start > Settings > System > System Information > Wireless Module > GSM/GPRS > Firmware Version The correct version should be R3BEC31ACL_V1.01CA
- If the above version is incorrect, please repeat the above steps to update again.
Via MSMobiles


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