[Q] Lumia 710 wont downgrade to Qualcomm bootloader

cama900

Senior Member
Apr 4, 2011
66
12
0
So I just got a T-Mobile Lumia 710 RM-809 and I cant for the life of me get it to downgrade to the Qualcomm bootloader! So first I tried installing NCS and the russian rom using these instructions: http://www.youtube.com/watch?v=kMgshxLOp9k&safety_mode=true&persist_safety_mode=1 and it seemed to work, except If I put it into OSBL mode its still shows up as Nokia USB Connectivity. So I tried using NSS Pro v0.54, put the files in the correct place, then tried to install the bootloader and It came up with this:
Init connection...Already in the correct mode.
Enter bootloader mode...Done
Boot version: 240.116.132.78
Sending certificate...Failed.

Its always this, no mater if I start it in OSBL or normal mode. So then I decided to use navifirm+ to download 7.8. so I downloaded 7.8 for RM803, then flashed it to my phone (RM-809) and tried using NSS again. Still no luck. Ive tried everything I can think of! Ive tried it on windows 8 x64 and 7 x86, I have zune installed, along with the drivers that were in the program files of NCS, And I cant get it to downgrade! Anyway, Im feeling like Ive missed some crucial step, but I cant find out what!
Anybody have any Ideas? Thanks in advanced!
 

salmanseahmed

New member
Jan 7, 2012
3
0
0
nss :(

dude can you plz help me..when i open the NSS the wp7 tab dosent show up in the right part of the window under the flashing tab...it seems to be somwhere down where i cant scroll.
 

July IGHOR

Member
Jul 3, 2010
32
44
58
IF
t.me
Cannot Boot

Hi. My Lumia 710 instantly rebooting when connected to charger.
No Nokia logo visible.
So I tried to flash Qualcomm bootloader and I have always this error:

Please help me.
 

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psquicker

Member
Jun 10, 2009
38
33
0
Hyderabad
Try this ....

Hi. My Lumia 710 instantly rebooting when connected to charger.
No Nokia logo visible.
So I tried to flash Qualcomm bootloader and I have always this error:

Please help me.
Hi,
That should not be the problem...

K... Let's try this one....

Download my modified NSS PRO(RM-803 QUALCOM BOOTLOADER is already set here)

1. SIMPLY Connect your phone (no need to turn off; you don't need to do any special sequencial keypress)
2. Run the NSS PRO..
3. From FLASH section, select WP7 tools.
4. When your phone is detected, from the connectivity sections select NORMAL MODE and WP7 Qualcomm.



5. Once done, select INSTALL.... ( ALWAYS SELCT NO when it asks to format, unless you want your phone to be dead )...

6. Once done, your phone will be in OSBL moode

7. Now you can use the NSS pro to install your custom ROM or else "downloader.exe" provided with the custom ROM.

Refer to my thread if you have any issues :p
 

nidhinpb

New member
May 9, 2014
1
0
0
how i enter osbl mode from my lumia 710 dload bootloader

please help me........
I cant enter osbl mode.
i have nokia lumia 710
which has nokia dload bootloader
please help me to enter as osbl mode
:crying: :crying: :crying: