[Android Software Development] alpha4test:
here's the solution:

quote from: http://android.modaco.com/content/z...date-save-ur-bricked-v880-and-also-the-imei/#

1. u have to check whether ur phone could enter the DFU mode by doing this:

turn off the power and unplug the battery.

then press both volume + and - and connect ur phone with PC. (no need to put back the battery)

if everything okay, u will hear the notification sound from window system that u will see "

ZTE Handset Diagnostic Interface (DFU) is connect with (COM XX)" with device manager in control panel

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if ur phone cannot use this DFU method, then it is really bricked. U need a replacement.

2. If the phone is detected , continue to download the toolset and firmware.

http://hotfile.com/dl/115367515/af3e2a7/v8...covery.zip.html

then replace the .cfg file with this :

http://hotfile.com/dl/115438650/db0c6ba/WC...etting.cfg.html

3. Run USDL_P726CV1.00.00.exe inside

4. login in as Administrator (press the "!" mark to change the ID). then Input the PW: ZTEsmt123

5. enter the main window then u need to setup the communication port corresponding to the one in DFU mode

press ok to go back the main window.

menu bar > option >port config. setup the com port in DFU mode

After that, u will see the message that ur phone is running in download mode in Line 1.

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6. then pickup the proper firmware u want to upload to the phone by browsing the path for "SW Directory" at the lower left hand corner

(u need to scroll down in the main window to see this thread)

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there are 3 firmware sets inside the zip u download.

A. GEN 1 Orange Sanfranciso with a partition layout of 136 mb system 15 cache and 289mb data

B. GEN 2 Orange Sanfranciso with a partition layout of 136 mb system 15 cache and 289mb data

C. Unicom Chinese retail version of blade(U X880) , running with 256 mb system ram.

Select pack B. then press start all and wait for it.

(if u want to downgrade to gen 1, u need to do it with the upgrade downloader u use earlier. and replace the files in the "files" folder with Gen 1 Stock partition package.

use this downloader to do so will make ur phone struck with Airplane Mode. )

then setup the config threads as shown

when everything is ready, press start all to lauch the program,

yr phone should be okay when it finish.

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Backup the Original IMEI

For those who wanna perform NV backup or restore should know that,

u can't make a nvm backup or restore unless FTM mode of stock recovery has been launch,

for this action need to be done with the FTM protocol instead of DFU mode.

so just flash back the stock recovery and boot it to FTM mode before running this official downloader.

select both RF/BT/IMEI/ulock info and nv backup option , u will get a proper working nvm for future use. )

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Restoring IMEI

As mention, to make the nv option works , ur have to flash back the stock recovery and get it boot in FTM mode.

if u mess up with ur imei , u can revive it by editing the nvm file and flash it back.

make a backup with mydownloader . edit the channel1.nvm with any hex editor

or download it from here

go to offset 0x1105

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the current imei is store in dec format , an imei : 3 45 67 89 10 12 13 14

will be reordered as 3A 54 76 98 01 21 31 41

first digit settle in this way: (0)3>>3(0), A=0

get ur self the orignial imei with the sticker on the phone

reorder it with the above proper format.

save the changes and then restore it with the official downloader

by enabling the "NV RESTORE" and "RF /BT /IMEI" Option.

and u will have yr IMEI back.

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for those who lose their IMEI with a downgrade GEN1 machine and without a proper backup.

download this GEN1 base NVM file:

http://hotfile.com/dl/115553882/d8d599f/Channel1.nvm.html (GEN 1 nvm BACKUP)

ur IMEI location starting from offset 1215, edit it with a hexeditor with proper order.

restore steps are same as Gen2.

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thank's burstlam and AndersTornberg from modaco