How to Upgrade firmware modem sierra 881U v.1 to v.1.2

1. Click here to download the latest sierra 881U firmware
2. Attention : For laptop, Make sure your battery full charge and you should plugin AC charge to avoid lack of power .
3. For PC , make sure to use the UPS, to avoid the occurrence of failure during the firmware upgrade process
4. Remove your simcard , and make the 3G watcher like this

5. Run fireware application AC881U_F1_2_3_15ap.exe ,
program will searching for device then Click OK to upgrade.

6. You will see notification if successful, the notification will appear.

list of DNS :

Good luck!!


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posted by adhi_undip

5 komentar:

  1. Thanks bro...mau nyoba nih..
    Salam Kenal

  2. Makasih bro...ini sangat membantu...salam kenal

  3. ok bro , sama- sama .
    ditunggu progressnya yow .

  4. kok pnya qu selalu aDa tulisan :
    failed to find device