notice: all this instructions is from XDA forum... thx to original authors....
INSTRUCTIONS FOR BOOTLOADER:
Requires an unlocked bootloader (a.k.a. qualcomm development bootloader).
Easy to check: Turn the phone OFF, then press and hold VOLUME UP + POWER until you notice a short vibration. Plug in to the computer. If the phone turns up in disk mode (USB Mass Storage Device), then you have an unlocked bootloader. IF you're in Windows, it will ask if you want to format the disk. SAY NO
http://forum.xda-developers.com/showthread.php?t=1620629
First of all, Download the latest version of NSS Pro (v0.48 beta) from
here. Paste the .zip file in a folder and then extract it.
Download these 3 files :
- RM-803 Part 1
- RM-803 Part 2
- RM-803_nokia_osbl.bin
Paste those files in NSS\loaders\special\wp7\
Now you’re ready to start the work with NSS. Open the application. Go to flashing>WP7 Tools.
Turn your phone off and connect it to your PC using an USB cable. Press the ‘Install’ button to quickly install the Qualcomm Unlocked bootloader to your phone. Once its finished, turn your phone on, but don’t remove it from PC. After its turned on, you’re left with an unlocked Nokia Lumia 710.
Desc. of the flashing related functions of the software :
-
Read PMM button - reads the PMM partition with Nokia specific values(product
code, MAC addresses, etc., you can edit in the boxes
-
Write PMM button - writes back to the partition a selected value (via Update
checkbox)
Install button - use this to quickly install Qcom loader on 710(no way to load on
800 as the cert is checked)
Parse FS button - you can use this to test NSS partition parser and compare
against 3rd party tool, to make sure something catastrophically wrong will not
happen during recovery
Restore button - This will attempt to recover the Nokia production loader (so called DLOAD)
via raw NAND write into partition 2 of the connected phone. Make
sure you start in Normal mode as NSS will need to check phone type and battery
value (to make sure wrong file is not written to 800, or if the battery is critically
low)
FOR FLASHING ROM:
use Nokia Lumia 710 downloader
Enter OSBL mode(WARNING: If you get Format Disk message in Windows - always click Cancel !!!)
Power off the phone & Remove the USB cable
Press and hold the Vol+ button
Plug the USB cable, wait for the buzz, Release the Vol+ button
Run this tool as administrator user
http://forum.xda-developers.com/attachment.php?attachmentid=1074900&d=1337618177
