Develop Bugs

How to Change Product Code

I'm currently using Rogers Lumia 900 (RM-808). I would like to update the firmware to RM-823 so that I can have a non-Rogers firmware. Is it possible to change the product code at all?
Or is it better for me to flash a ATT firmware instead>?

As far as I know, there are a few people trying to do this but nobody has successfully flashed the phone.. They've been able to trick the flashing software into interpreting the RM-823 ROM as an upgrade to their RM-808 phone, but once the flashing process begins it stops around 5% and the phone reboots apparently with no changes...
I'm pretty sure that you won't be able to flash the AT&T firmware..I have an AT&T phone, it is also RM-808, so even if it were possible to flash to the AT&T firmware I don't see how it would help you.

Wp 7.8 installation

hi
been a long time user of the xda forums and love the site thanks to all u who keep it up and running :good:
so i got me the lumia 900 a couple of weeks ago and started waitimg for the upcoming 7.8 update but i`m not the most patiend guy around so
when finally the 7.8 leak came out i figured why the hell not try to get it to my phone
never flashed a windows phone before so had to do some reading to figure out how to do it
and it seems quite hard to find any deasent information anywhere or everything i splattered around on different sites
so i thought i`d make a little guide here to all of you because it was rather easy after you got all you need.
so here we go:
1.download navifirm+
http://www.softpedia.com/get/Mobile-Phone-Tools/Nokia/NaviFirm-Plus.shtml
2.download nokia care suite 5.0
http://www.nokiabreak.com/download-nokia-care-suite.html
3. install navifirm+
4. download the correct package your lumia rm-808 or rm 823
the latest firmware is the one that is the last the list... (your RM is written on the box your phone came with)
im from finland so mine is RM-823 Country Variant WHITE
5.install nokia care suite
after installation also install the drivers that are in the nokia installation folder
6. unhide all your folders
7. go to c:\\programdata\nokiapackages\ CREATE A FOLDER NAMED Products
8. cut the package you donloaded via navifirm and paste it in c:\\programdata\nokiapackages\Products
and rename it to your RM
In my case it looked like this when finished c:\\programdata\nokiapackages\Products\RM-823
9. now run nokia care suite AS ADMINISTRATOR and choose Product support tool for for store
10. connect your phone
11. chose programming and refurbish
12. if you`ve done everything right it should give you the code for the old version and the new version
13. press start and just wait til it`s done flashing should take about 5-10 minutes til it`s done
this worked just fine for me, no problems so far and everythings running great in 7.8
i

Windows phone 7.8 Argentina Personal
I tried it yesterday and it works perfectly.
In case, here a link with a slightly more detailed tutorial::fingers-crossed:
http://blogs.itpro.es/danialonso/tu...ws-phone-7-8-1750-823-8858-12460/#comment-368

Can anyone confirm whether the RM-808 works on an AT&T Lumia 900?

kashk5 said:
Can anyone confirm whether the RM-808 works on an AT&T Lumia 900?
Click to expand...
Click to collapse
Not yet, you have to wait for RM-808 from AT&T

For Lumia 900 AT&T owner..the reason why u can't just used the variant that we all can used is bcoz ur Lumia is different from any of us..remember that AT&T Lumia have an LTE connection which mean different driver, software, etc. So you guys have to wait whether AT&T itself or Nokia to make ur variants, as i can see, theres no other way

Gotcha, thanks. Well here's hoping that the AT&T version of 7.8 is released soon.

http://www.youtube.com/watch?v=0ee_tKLYPnI this is a detailed english version on how to do it

hi
i have a movistar 7.5 lumia 900, and i want to update to 7.8, but: there is no update for my product code and my phone is already sim unlocked but i received it that way, so i don't have the unlock code, is there a way to update without sim locking it, or is there any sector or part that i can backup to restore the sim unlock, or is there a product code or flashing way as well that will not lock it, cause i us another carrier and even if, the update for my product code comes, i'm afraid it will lock after updating it?
any help, guide or advice
thank you very much indeed
atv

atv said:
i have a movistar 7.5 lumia 900, and i want to update to 7.8, but: there is no update for my product code and my phone is already sim unlocked but i received it that way, so i don't have the unlock code, is there a way to update without sim locking it, or is there any sector or part that i can backup to restore the sim unlock, or is there a product code or flashing way as well that will not lock it, cause i us another carrier and even if, the update for my product code comes, i'm afraid it will lock after updating it?
any help, guide or advice
thank you very much indeed
atv
Click to expand...
Click to collapse
hye there, 1. u dont have to care much about the product code, theres no big different between variant, only carrier logo, app..basically all variant just the same, my phone is Singapore set, a small country, yet i am flashing Finland variant and everything works just fine as of now.
2. As for sim lock/unlocked, as far as i know, only AT&T Lumia is sim lock and can be unlcoked already by calling AT&T if not mistaken, and no, i dont think u will be sim lock after updating, an unlocked set will stay as unlocked just my 2 cent.
Note: i've already flash 3 different variant on my Lumia 900, Sweden, India and lastly Finland, no sim lock or whatsoever, all 3 variant, my sim card just working fine, can sms, call, online and all. The diffrent is logo when u startup your phone, and language on first install (Ex: if u choose sweden variant, on first start there will be sweden language, but u can change it on next screen. be careful not to bricked your Lumia while flashing xD

kecil26 said:
hye there, 1. u dont have to care much about the product code, theres no big different between variant, only carrier logo, app..basically all variant just the same, my phone is Singapore set, a small country, yet i am flashing Finland variant and everything works just fine as of now.
2. As for sim lock/unlocked, as far as i know, only AT&T Lumia is sim lock and can be unlcoked already by calling AT&T if not mistaken, and no, i dont think u will be sim lock after updating, an unlocked set will stay as unlocked just my 2 cent.
Note: i've already flash 3 different variant on my Lumia 900, Sweden, India and lastly Finland, no sim lock or whatsoever, all 3 variant, my sim card just working fine, can sms, call, online and all. The diffrent is logo when u startup your phone, and language on first install (Ex: if u choose sweden variant, on first start there will be sweden language, but u can change it on next screen. be careful not to bricked your Lumia while flashing xD
Click to expand...
Click to collapse
So is there a way to flash the Mexican RM808 version of 7.8 on to my AT&T Lumia 900, while we are waiting for the AT&T version?

raymondn said:
So is there a way to flash the Mexican RM808 version of 7.8 on to my AT&T Lumia 900, while we are waiting for the AT&T version?
Click to expand...
Click to collapse
i dont think you can flash anything to AT&T Lumia yet, the bootloader prevent you to do that.

At&t rm-808 to mexico country variant

Hello Guys, Do you know anything about this?:
I tried to flash the fimware rm-808 MEXICO LTE COUNTRY VARIANT (12310), but i cant, ALWAYS SHOW ERROR o said OSBL reported an error, I only can flash THE SAME FIRMWARE (AT&T BLACK)
Tnx!!

skam2420 said:
Hello Guys, Do you know anything about this?:
I tried to flash the fimware rm-808 MEXICO LTE COUNTRY VARIANT (12310), but i cant, ALWAYS SHOW ERROR o said OSBL reported an error, I only can flash THE SAME FIRMWARE (AT&T BLACK)
Tnx!!
Click to expand...
Click to collapse
are you trying to flash WP 7.8 on that AT&T phone? if yes, the answer is you can't do that. Variant for RM-808 is not out yet. If you are trying to flash an older update, the answer might be you have an locked bootloader.
edit: obsl = operating system bootloader, so you may likely had an locked bootloader.

kecil26 said:
are you trying to flash WP 7.8 on that AT&T phone? if yes, the answer is you can't do that. Variant for RM-808 is not out yet. If you are trying to flash an older update, the answer might be you have an locked bootloader.
edit: obsl = operating system bootloader, so you may likely had an locked bootloader.
Click to expand...
Click to collapse
OOO, thanks!, and i tried to flash 7.5 version of MEXICO COUNTRY VARIANT because it is debranded and have TETHERING! U_U

did you use "recovery" in 'nokia product support tool for Store 5.0'? I used this to put the mexican variant onto my rm-808 and i have been really happy. I have a rogers version though, don't know what different in the att one

SlayerX said:
did you use "recovery" in 'nokia product support tool for Store 5.0'? I used this to put the mexican variant onto my rm-808 and i have been really happy. I have a rogers version though, don't know what different in the att one
Click to expand...
Click to collapse
Everything works for you? I have a Rogers Lumia 900. Wouldnt mind trying this just to say I did Any pros or cons?

I tried RECOVERY & RECOVERY, nothing works, ALWAYS an ERROR u_u

skam2420 said:
I tried RECOVERY & RECOVERY, nothing works, ALWAYS an ERROR u_u
Click to expand...
Click to collapse
at&t's won't flash to the Mexico variant, or the Rogers variant.

exiva said:
at&t's won't flash to the Mexico variant, or the Rogers variant.
Click to expand...
Click to collapse
Isn't there a variant you coud flash to from the AT&T variant and then flashing it to the Mexican or Rogers variant?

skam2420 said:
OOO, thanks!, and i tried to flash 7.5 version of MEXICO COUNTRY VARIANT because it is debranded and have TETHERING! U_U
Click to expand...
Click to collapse
If you have an unlocked att lumia 900 does that mean your bootloader is also unlocked or is it independent? I have the telcel rom downloaded and ready to flash just wanted to ask as i need my tethering and mms!

sadude said:
If you have an unlocked att lumia 900 does that mean your bootloader is also unlocked or is it independent? I have the telcel rom downloaded and ready to flash just wanted to ask as i need my tethering and mms!
Click to expand...
Click to collapse
If you mean unlocked, as you entered in a 7 or 8 digit (I forget which) number, then no. Your bootloader is still locked, and that'll do nothing. What I'm saying is, you're trying to put a square peg in a round hole.

Navifirm: how to use it to upgrade to 7.8

how to use navifirm, i need to upgrade my phone to 7.8
I am using Nokia lumia 900(ATT version) phone is unlocked.

As has been posted here 900 times. You can not yet flash 7.8 to an at&t Lumia. Once the specific at&t version is uploaded to the care suite server, you can then flash it. But, at this point with the access to care suite firmware servers ending in 23 days I wouldn't expect them to be posting any new files to it until access is locked down.

exiva said:
As has been posted here 900 times. You can not yet flash 7.8 to an at&t Lumia. Once the specific at&t version is uploaded to the care suite server, you can then flash it. But, at this point with the access to care suite firmware servers ending in 23 days I wouldn't expect them to be posting any new files to it until access is locked down.
Click to expand...
Click to collapse
thanks Exiva, so what that max i can go with
mine is 2175.2301.8779.12223 rite now

maxximboy1 said:
thanks Exiva, so what that max i can go with
mine is 2175.2301.8779.12223 rite now
Click to expand...
Click to collapse
I don't have my phone handy, or a PC to check navifirm. But that sounds about right. You can ONLY flash at&t firmware on an at&t Lumia. Can't do a product code switch trick or anything to flash on EU, Rogers or Mexico Telcel firmware.

carrier info

Hey guys, over the holidays I picked up a lumia 635 and an 830, but I don't know the carriers of either and I need to sim unlock them to work with Telus. Both are labeled 000-CA in extra+info.
Is there a way to find out the carriers? Thanks

Is there anything buried in the registry or current rom on phone info somewhere?

megagprime said:
Both are labeled 000-CA in extra+info.
Click to expand...
Click to collapse
They should be carrier-unlocked phones 000-CA is for Canada
Registry values for carrier-unlocked phones https://msdn.microsoft.com/en-us/library/windows/hardware/dn772248(v=vs.85).aspx

Yes I know that but they are both carrier sim locked. Probably set to 000-ca for unbranded updates.
Anybody have any idea how to determine the carrier?

000-CA is Canada carrier-unlocked phones.
Your phones are perhaps blacklisted.

megagprime said:
Yes I know that but they are both carrier sim locked. Probably set to 000-ca for unbranded updates.
Anybody have any idea how to determine the carrier?
Click to expand...
Click to collapse
Use Windows Device Recovery Tool to restore the original firmwares of the phones and they will have the real values of the carriers.

I'll try that, thanks

w.bogdan said:
Use Windows Device Recovery Tool to restore the original firmwares of the phones and they will have the real values of the carriers.
Click to expand...
Click to collapse
after windows device recovery reflash still says 000-ca....

On WP8 you can try ##7820#, it could provide info on SIM lock. On WP10 doesn't work.

Only shows sim lock

If you install Windows Insider, in the About info, the value MOID is still 000-CA?

You have Product ID for your lumia 635 and 830 ?