First of all

download these 2 file (DL_MF680_H3G_SE_EUV1.00.05.exe & DL_MF680_UMOB_MY_EUV1.00.02.exe )
- now take out your sim card from zte mf680
- plug it into your computer USB & wait for your computer to recognize it
- close any dashboard/modem software which pop up if any
- run this DL_MF680_UMOB_MY_EUV1.00.02.exe
- when the update button appear, dont click first leave it
- now go to my computer -> Drive C -> Programs file -> WIndow Service -> MF662 folder -> Copy everything out and place them in the temporary places ( * u going to need them later on )
- after copy everything in that MF662 folder under that folder, close the DL_MF680_UMOB_MY_EUV1.00.02.exe which is on
- now run this file DL_MF680_H3G_SE_EUV1.00.05.exe
- when the update button apppear, dont click update yet, leave it there
- now go to my computer -> Drive C -> Programs file -> WIndow Service -> MF662 folder -> delete everything inside
- go to the temporary place u copy * file just now, copy all them again
- go to my computer -> Drive C -> Programs file -> WIndow Service -> MF662 folder -> Paste * file u copy here
- now click the update button on DL_MF680_UMOB_MY_EUV1.00.02.exe
- wait for the whole update process to finish, ( take about 6~7 MIN )
- once update finish, remove your ZTE MF680 modem
- uninstall your old dashboard modem software first
- plug in your zte mf680 with your sim card
- install new u mobile dashboard

enjoy..
will try to do some video screenshot later,.. was dinner just now..
sorry for delay,.. hope it helps     

support@zte.com.cn
4:16 PM (2 minutes ago)

to mobile, me
Dear mobiel teams,
Please handle this issue as soon as possbiel,thanks!



Dear sir,
Thanks for contacting us!
We are responsible for ZTE system equipemts afer sale service.Concering about your issue,we have transfered your inquiry to our mobiel teams,they
will sovle this for you,please know that!
Thanks for your understanding!


Best Regards,

ZTE Global Customer Support Center
Hotline:+86-755-26771900
Complaint:+86-755-26770199