yashsingh1/xdaforums huggingface dataset:
[Windows Phone 8 General] anubis23:
Hello, i've updated the first post with the request information. Hopefully it will match with the ROM downloaded from mrcab site. If it doesn't match, i can see to put together a torrent file of the current rom i have, which was downloaded via the Nokia Data Package tool before it went offline, however i am not sure if xda allows torrent or how long it would be able to keep it up.
[Windows Phone 8 General] penyo5:
Thank you! It matches the checksum of the ROM I downloaded from mrcab site. Flashed it without a problem. Everything works fine. Thanks again for your great work!
[Windows Phone 8 General] chargerman34:
I am using the same download as you but am having an issue. The download contains 4 .mbn files. When attempting to flash I receive error code 2228224 as its failing to open ffu file. Can anyone guide me in the right direction? Thank you
[Windows Phone 8 General] penyo5:
I am not sure what download you are referring to. If you got to step 10 and if you want to flash the T-Mobile US ROM, you need to download only one file - RM1073_02177.00000.15203.26115_RETAIL_prod_signed_1001_023F70_TMO-US.ffu. I am on T-Mobile and this worked for me. I do not know about other providers.
[Windows Phone 8 General] chargerman34:
I realized I had unpacked the ffu file so it was not working. I just successfully flashed with the T-Mobile rom. Thanks!
[Windows Phone 8 General] jenesuispasbavard:
How do I go back to the AT&T ffu? I downloaded it from the same http://www.mrcrab.net/nokia.html link but when I try to flash it with the LumiaFlashTools it tells me that the product code does not match. And yes, I've tried WDRT as well, and that downlaods the AT&T ffu but fails to flash it.

Is there any way to revert the changes made by the iutool and .cab files in steps 1-7?
[Windows Phone 8 General] rush_ad:
I keep getting errors at first step. Any suggestions? Thanks

C:\Program Files (x86)\Windows Phone Kits\8.1\Tools\bin\i386>iutool.exe -p C:\Lumia -V

(IUTool Version: 11:52:10/Feb 7 2014)

Log file: C:\Users\xxxxxx\AppData\Local\Temp\IUTool-{299338D7-E9AD-4D02-BD74-B341894FDEEF}.etl

[1] Started device 880aa44a849b6a2404ad0afc5e448649

[1] Transferring files started

[1] Transferred file 1/4

[1] Transferred file 2/4

[1] Transferred file 3/4

[1] Transferred file 4/4

[1] Transferring files complete: 4 files

[1] Update started

[1] Installation failed (HRESULT = 0x801882c1)

[1] Failed (0x801882c1)

ERROR: 0x801882c1

Command failed. (HRESULT = 0x801882c1)
[Windows Phone 8 General] yta123:
You have 4 files. Remove the archive that you unzipped to get the 3 cab files. It should transfer the 3 cab files only.
[Windows Phone 8 General] crutchcorn:
How can I find the TMobile US' 640's model and product type? EDIT: Turns out reading helps. :| I am so dumb. Sorry guys!
[Windows Phone 8 General] focussoft:
i have the same problem

all my machines work on windows 7 x64 ultimate so i cant switch to a win10 machine

i tried every suggestion but it keeps coming with that error 0x80070490

does anyone have a solution for that ?

Drivers are installed fine , phone is visible in windows , even unlocked developer mode , deleted in devices and printers and had it reinstall itself , nothing helped

:(
[Windows Phone 8 General] jusnoob:
I did It!! Woohoo!

Woohoo! Thank you anubis23 and qodexc. I have never done anything like this b4. How do I donate? Wow I really did it!! My phone is now a T-Mob tap, yes!
[Windows Phone 8 General] boonesmi:
still try a different machine (one of your other win7 machines) i highly doubt the reason it hasn't worked for some people is the OS. its much more likely its something else going on.
[Windows Phone 8 General] penyo5:
I can attest that the process works with Windowsa 7 x64. I was able to successfully rebrand my Lumia 640 from ATT to T-Mobile using a Windows 7 x64 Home desktop PC. However, I have seen that same 0x80070490 error on another Win 7 desktop while installing regular windows updates, entirely unrelated to flashing phone ROMs. The error is probably due to corrupted system files on the PC. Try another machine.
[Windows Phone 8 General] sb)a:
Seem to be impossible to unlock Band 3 even with MX or AR or even LTA rom.

Screenshot from the Telecel MX rom
[Windows Phone 8 General] rush_ad:
I updated following this tutorial to T-Mobile US ROM. However I do not see the wifi calling app on the phone. Is there a trick?
[Windows Phone 8 General] focussoft:
I tried it on a different machine and get the same error

Maybe some update or package is missing ?
[Windows Phone 8 General] maxmad1:
Is mrCrab down? I can not find Tmobile firmware
[Windows Phone 8 General] maxmad1:
nvm.. found that the code for TMo Lumia 640 is RM-1073 use that and use the product code provided in the first post; it gives you the FFU file link.
[Windows Phone 8 General] caychanh30:
Thanks for this tool OP. I kept getting the error 0x80070490 so I uninstalled WDRT and then reinstalled it again to make sure I didn't miss anything. Restarted Win 7 x64 desktop computer then proceeded again with iutools. All the other steps went by like a breeze. Thanks
[Windows Phone 8 General] caychanh30:
Windows 10 DP after flashing Tmobile ROM

Has anyone tried to install Windows 10 Developer Preview after flashing Tmobile ROM on their ATT brand Lumia 640 LTE? Thanks
[Windows Phone 8 General] nartex2:
Yes, no problems.
[Windows Phone 8 General] jjc5891:
If anyone chose the Argentina ROM, were you able to select "English (United States)" as the phone language? No option during initial setup and can't set it post-install.
[Windows Phone 8 General] KeinoDoggy:
Okay I finally was able to do install the T-mobile ROM by using the "Image Designer" program to flash. I tried using the thor.exe from a dos prompt as suggested but every attempt ended in an error from thor.

The only thing left to do is step (11)h but everytime I try thor again a box appears on my PC while the phone is rebooting that says the "thor program has stopped working". Any suggestions?
[Windows Phone 8 General] KeinoDoggy:
Well I resolved the problem. Anyone experiencing similar failures using Thor, uninstall the "Windows Device Recovery Tool" completely and then reinstall. I was able to finish step 11(h) after doing so. Thanks for all the great info! :laugh:
[Windows Phone 8 General] PepperdotNet:
Indeed. I started with English (Australia). I was able to install EN-US as Regional format and Speech with English keyboard but can't change the Phone language. Well actually I can, if I choose UK. Very strange.
[Windows Phone 8 General] bibikalka:
The procedure worked! Thanks to the OP for all the hard work !!!

Btw, there is a nice translation to Russian over here :

http://windows-phone-7.su/answer/48...lte-att-ustanovit-evropeyskuyu-proshivku.html
[Windows Phone 8 General] jjc5891:
Thanks, will try it out. Does the AU rom enable the same bands as the AR rom?

EDIT: Answered my own question...

US:

GSM network: 850 MHz, 900 MHz, 1800 MHz, 1900 MHz

WCDMA network: Band 1 (2100 MHz), Band 2 (1900 MHz), Band 4 (1700/2100 MHz), Band 5 (850 MHz)

LTE FDD network: Band 2 (1900 MHz), Band 4 (1700/2100 MHz), Band 5 (850MHz), Band 7 (2600 MHz), Band 12 (700 MHz), Band 17 (700MHz), Band 28 (700 MHz)

AU:

GSM network: 850 MHz, 900 MHz, 1800 MHz, 1900 MHz

WCDMA network: Band 1 (2100 MHz), Band 2 (1900 MHz), Band 4 (1700/2100 MHz), Band 5 (850 MHz), Band 8 (900 MHz)

LTE FDD network: Band 1 (2100 MHz), Band 2 (1900 MHz), Band 3 (1800 MHz), Band 4 (1700/2100 MHz), Band 5 (850MHz), Band 7 (2600 MHz), Band 8 (900MHz), Band 12 (700 MHz), Band 17 (700MHz), Band 20 (800MHz), Band 28 (700 MHz)

TD-LTE network: Band 38 (2600 MHz), Band 40 (2300 MHz)

AR:

GSM network: 850 MHz, 900 MHz, 1.800 MHz, 1.900 MHz

WCDMA network: Band 1 (2.100 MHz), Band 2 (1.900 MHz), Band 4 (1700/2100 MHz), Band 5 (850 MHz)

LTE FDD network: Band 2 (1.900 MHz), Band 4 (1700/2100 MHz), Band 5 (850MHz), Band 7 (2.600 MHz), Band 12 (700 MHz), Band 17 (700MHz), Band 28 (700 MHz)
[Windows Phone 8 General] Frenel:
Hi jjc5891,

Have you tried if the AU Rom enables all those bands?

Thank you.
[Windows Phone 8 General] rush_ad:
I am running T-Mobile US ROM now.

How do I test (or find out) which LTE band the phone is currently using? I would like to see which LTE band the phone is connected to as I travel around.
[Windows Phone 8 General] mankand007:
Hey! I flashed TMo as well, and I don't see any Wifi calling setting. Did you get yours to work?

---------- Post added at 04:03 PM ---------- Previous post was at 03:59 PM ----------

Hi. I downloaded the ffu from mrcrab, but I don't have a Wifi calling setting, although I see TMobile boot logo. Is there any additional step to get wifi calling?
[Windows Phone 8 General] rush_ad:
WiFi calling is under SIM settings. Look and you will find it.

There is no longer a separate app for WiFi calling.

---------- Post added at 04:31 PM ---------- Previous post was at 04:16 PM ----------

http://forums.windowscentral.com/mi...0-xl-lte-rm-1063-purchased-microsoft-usa.html

I can use these instructions and find out what Band 12 is supported on this phone. How do I actually check which LTE Band is currently being used?
[Windows Phone 8 General] trumpeter001:
Still Asking For Unlock Code

Okay, I was able to get everything to work. Cabs installed, new TMO rom installed (same one used in this thread), and final thor ran to change the model #.

When I installed a T-Mobile sim card, it gives me a message that says the phone is locked to a carrier and needs an unlock code.

Any suggestions?
[Windows Phone 8 General] madhahatterclb:
You will need to request the unlock code from the carrier the phone was originally branded too.

Takes a day or two to get the code.
[Windows Phone 8 General] TakeMeHome:
Can anybody send me .ffu t mobile ROM @ ThrowAway23@dayrep.com. It's taking me 3hr to download the rom.
[Windows Phone 8 General] trumpeter001:
Was I mistaken then, thinking that this process unlocked to phone to make it available to other carriers?
[Windows Phone 8 General] jjc5891:
I immediately updated it to Windows 10 and the field test code does not work so I can't check. From a functional perspective, I do like this better than the Argentina rom and I'm going to stick with it.

I ran into issues with the Argentina rom when I upgraded to W10 with language selection, blank app icons, and no glance screen after hard reset. The Australia rom seems to be OK, and I've got the process down after a couple tries so that everything runs smooth with W10:

1) Install the FFU for 059X189, choose English (United States)

2) Change product code to 059X189

3) Login, disable store app updates and let it sit for an hour to "settle"

4) Uninstall ALL non-system apps

5) Install Windows Insider app to upgrade to W10

6) Configure as needed and re-install any apps you wanted to keep from step 4.

Don't hard reset in W10, seems to remove some "Extra" apps like equalizer, glance screen. Only way I was able to get them back was flash W8.1 FFU and upgrade again.
[Windows Phone 8 General] TakeMeHome:
two day

In order to unlock the phone, you have to go to att deviceunlock and fill out the info and wait the two days.

In order to to debrand to use wifi calling follow OP's guide
[Windows Phone 8 General] evilvoice:
Okay, so I finally succeeded in doing this on my 2nd phone. I've flashed the ffu in the op and don't get WiFi calling. I'm using the go phone sim that came with the phone. Is that an issue? Do I need to get a different sim? I went to sim settings and no WiFi calling. Any help is appreciated
[Windows Phone 8 General] jenesuispasbavard:
Is there a way to install the 'global swap' ffu's? I'm guessing they come with no carrier crap. Every time I try to flash it gives me an error 'Failed to flash with device error { 0x1d, 0x0, 0x0, 0x2, 0xa, 0x4 }.' with the LumiaFlashTools or error 'THOR2_ERROR_FA_FFU_IMG_HDR_RESET_PROTECTION_VERSION_TOO_SMALL' with thor2. Any ideas?
[Windows Phone 8 General] juicer52:
Noob here but from my understanding, this does not unlock your phone.

If you want a quick unlock using ATT's kind offer of free unlock to non-ATT customers, DO NOT turn your phone on with the ATT sim card in place. This automatically locks the phone to ATT for the 6 month period of prepaid service as a requirement to unlock.

These phones ship with sim card in place but battery uninstalled so, before you insert the battery, remove ATT sim card.

Go to ATT unlock site and input IMEI and contact info. ATT sends a confirmation email that you need to respond to within 24 hours and then just wait about 2 days for the response.

It once failed for me and I just resubmitted.

If you just bought the phone and screwed up by leaving the sim card in place, return it if possible (make up an excuse) and get a replacement.

---------- Post added at 10:17 AM ---------- Previous post was at 10:06 AM ----------

Never flashed before. I have reread this several times but some of the jargon escapes me.

Feeling stupid here but at Mr. Crab site, what values am I to insert to get the TMobile Rom? Model / Product Type

I am in US on Lycamobile (TMo mvno) which for whatever reason doesn't support wifi calling??

Would this debranding change that option or will that remain blocked via the sim?
[Windows Phone 8 General] KeinoDoggy:
I've now De-Branded two AT&T Lumia 640 LTE phones and imaged them with the T-mobile Rom as directed. Both phones are experiencing the same problem. Wi-Fi calling worked at first but after entering an area with no cellular service, the wi-fi calling feature refused to work. I then went into settings>System>about>more info. There I noticed this: IMS:not registered.

I called T-mobile tech dept. and they said IMS must be registed for wi-fi calling to work. The tech said he would send something down to the SIM, and that I would need to be in an area, where i am receiving at least 4G. So I drove to an area with LTE and sure enough, the IMS became registered. However now that I am back in a building with no cellular it once again shows IMS:unregistered and have no wi-fi calling. Anyone else also experiencing this? If so this ROM flashing from ATT to Tmobile has a problem.
[Windows Phone 8 General] bartclan:
Band 3 question

All - I've got an unlocked 640 that I bought on Black Friday. I'm now in Belgium and would love to get LTE to work with my local provider (Mobile Vikings). However, MV uses LTE 1800 Band 3. Is there an appropriate ROM that activates this Band? Appreciate the assistance.
[Windows Phone 8 General] juicer52:
Really dumb question but when quotation marks " are used in instructions, are they to be included in the command code??

In step 10, "new product code" is the product code for usa TMo 059X0P7 ?

Again, same question... use quotation marks or not?
[Windows Phone 8 General] nitecourt:
So I got to step 7 and this happened:

[1] Started device 34173630ce8405adb48e6a9071f89974

[1] Transferring files started

[1] Transferred file 1/5

[1] Transferred file 2/5

[1] Transferred file 3/5

[1] Transferred file 4/5

[1] Transferred file 5/5

[1] Transferring files complete: 5 files

[1] Update started

[1] Installation failed (HRESULT = 0x801882c1)

[1] Failed (0x801882c1)

ERROR: 0x801882c1

Command failed. (HRESULT = 0x801882c1)

Any ideas?

---------- Post added at 02:31 AM ---------- Previous post was at 02:19 AM ----------

Nevermind. I figured it out. Make sure you only have the 3 cab files in the folder in step 7. If you have anything else in there it will try and transfer. I place all the need downloads within that folder and subfolders hence the error.
[Windows Phone 8 General] Frenel:
Did you find the way to revert the whole process back and re-establish the original DevicePlatformID?

I have done the steps 1-7 and it worked, but I am not going to flash it because I need band 20 and it looks like nobody got it enabled, so I would like to return it to the original state.

Thank you!

PS: I guess we would need the three "original" cab files.
[Windows Phone 8 General] crutchcorn:
So, I tried reverting back to the ATT rom and I hit this issue:

0xFA001304: Platform ID check fails. Reason(s): The FFU file is not meant for this product. The platform ID of image does not match with platform ID of the device.

Operation took about 2.00 seconds.

THOR2_ERROR_FA_FFU_STR_HDR_INVALID_PLATFORM_ID

THOR2 1.8.2.18 exited with error code -100658428 (0xFA001304)

However, I have already reverted the product ID using this command `thor2 -mode uefiflash -ffufile "C:\Users\crutc\Downloads\stocklumia\RM1073_02177.00000.15184.36016_RETAIL_prod_signed_1004_022B79_ATT-US.ffu" -productcodeupdate 059X0B8 -skip_flash`

Please help me, I forgot to SIM unlock the phone before hand and need to revert to the stock software in order to SIM unlock
[Windows Phone 8 General] juicer52:
Wow, that is an interesting Warning to be added in the step by step guide if true that you cannot unlock ATT sim after flash to TMo. Did you try?
[Windows Phone 8 General] ajaveed:
error when falshing T-mo rom

i get this error at step 10 when i try to flash the t-mobile ffu...

thor2 1.8.2.18 exited with error code 2228224
[Windows Phone 8 General] PepperdotNet:
Unlock SIM does not depend on ATT firmware. You can do it anytime.
[Windows Phone 8 General] celltech5333:
This process worked flawlessly to de-brand my 640...and I had to unlock the phone to use my att SIM as the phone thought it was a roamer.

So I am wondering, is it possible to bypass the bootloader and flash the 640 with the att 640 XL ffu? I believe that hardware wise the guts are the same except for the larger screen/battery. I am really trying to get VoLTE to work but it's not cooperating with either att/t-mob 640 loads...
[Windows Phone 8 General] juicer52:
Many posts read and reread: I am in USA market using Lycamobile (mvno of TMo)

1. Is the only benefit of debranding to allow access to tmobile extended range LTE band? Does this hold true for mvno of TMo?

2. Which rom to use that gives full access to all that L640 was made to handle?

3. Is there a downside to one rom over another?

4. Is it possible to revert to ATT for general resale purpose?
[Windows Phone 8 General] KeinoDoggy:
Please read my earlier post. I can confirm there is a bug or something in hardware that is preventing Wi-Fi calling to work consistently. Today I used a factory OEM T-mobile 640 LTE along side of one of the "converted" factory OEM AT&T 640 LTE phones. Wi-Fi will not work with the AT&T unit unless I also have a cellular connection available. Which basicly defeats the value of wi-fi calling. :(

Any thoughts Anubis23?
[Windows Phone 8 General] caychanh30:
tmobile converted lumia 640

I'm actually getting consistent wifi calling connection at work which i usually lose cellular connection every ten minutes or so. My cell phone connection usually starts at lte, then 4g, then 2g, then no connection, but wifi calling has been consistent as far as i can tell. On the other hand, i noticed lte in houston seemed to be locked on band 4. I thought houston has band 12 downtown? This converted lumia 640 doesn't connect to band 12 even though the option is there?
[Windows Phone 8 General] Godrillax:
Thank you OP! I'm a total newbie and I had a hard time doing this, but eventually chugged through and debranded two 640's and now they both have T-mobile Wi-Fi calling :D

It's my first time doing something like this since 2011 (but with Android) and I was very hesitant. All a new language to me. If I can do it, so can anyone else!
[Windows Phone 8 General] Frenel:
Will the phones with ROM changed update OTA to W10 when it is available?
[Windows Phone 8 General] pilot04:
I have rebranded an ATT 640 gophone with T-Mobile rom but Wi-Fi calling doesn't seem to work. I can turn Wi-Fi calling on or off in Sim settings but I can't get it to make a Wi-Fi call by turning off cellular. I switched to "Wi-Fi only" for calling preference and it fails to dial out until I re-enable cellular which changes it back to "Wi-Fi preferred" preference. Is there a way to force configure/test if Wi-Fi calling is indeed working? I can see "band 12" listed in field test mode so seems like flashing worked. Seems like several others are having issue with Wi-Fi calling as well....
[Windows Phone 8 General] throwaway70:
Ok, so I have an unlocked AT&T Go Phone. How do I turn it into a bone stock version like I bought an unbranded phone right from the Microsoft Store?
[Windows Phone 8 General] Raheinm:
How do I go back to the Att rom from the tmobile rom
[Windows Phone 8 General] KeinoDoggy:
Read my posts.Wi-Fi calling does not work from this procedure. I'm having the same problems with the two I imaged, however my T-mobile factory 640 LTE works great! I'll be returning the ATT units since I must have wi-fi calling
[Windows Phone 8 General] bibikalka:
Are you sure that the software versions are identical on the debranded ATT units, and the original T-mobile ?
[Windows Phone 8 General] KeinoDoggy:
I am using the US ATT Go Phone and flashing it as directed by Anubis23's directions, step by step. The T-Mobile ROM [US Product Code: 059X0P7] is the one he suggests, downloaded from http://www.mrcrab.net/nokia.html

Wi-fi calling is turned on in the phone under settings. However no wi-fi calling at all. Normally wi-fi calling on isindicated by a tiny phone handset on top next to the wi-fi strength indicator. It does not.

---------- Post added at 09:22 PM ---------- Previous post was at 09:21 PM ----------

I am using the US ATT Go Phone and flashing it as directed by Anubis23's directions, step by step. The T-Mobile ROM [US Product Code: 059X0P7] is the one he suggests, downloaded from http://www.mrcrab.net/nokia.html

Wi-fi calling is turned on in the phone under settings. However no wi-fi calling at all. Normally wi-fi calling on isindicated by a tiny phone handset on top next to the wi-fi strength indicator. It does not.
[Windows Phone 8 General] bibikalka:
Have you tried any of this :

https://support.t-mobile.com/thread/94585?start=0&tstart=0
[Windows Phone 8 General] boonesmi:
so i have both T-mobile 640 and ATT 640. (the att one i just bought as a backup)

i debranded the ATT one awhile ago and put it back in box as a backup.

after reading your posts i was concerned about wifi calling. so i pulled the sim from my original tmo phone and put it in the att. booted it up. turned on wifi calling. set to "wifi only". which put the phone in airplane mode. within 15 seconds the wifi icon has the handset icon (meaning wifi calling is ready). i called my wifes phone and had my wife call me.. both worked fine, no problems at all.

just to be sure i then kept those settings and rebooted the phone.. everything still worked fine.

so im not sure whats going on with yours, but i can verify that wifi calling (with cellular disabled) does work on the ATT 640 rebranded to TMO 640.

edit to add: i also got the rom from mrcrab searching 059X0P7

2nd edit to add: is it possible you skipped the last step and didn't change the phones product ID causing the tmobile system to reject it?
[Windows Phone 8 General] KeinoDoggy:
Wi-Fi calling on my other T-mobile phones both android and my OEM T-mobile Lumia 640 LTE and Lumia 925 work perfectly both at home and at other locations. My 911 address has been setup for 2 years..

---------- Post added at 10:53 PM ---------- Previous post was at 10:49 PM ----------

Last step was not skipped. In fact I allowed the Windows Device recovery tool connect to it and it stated I have the newest ROM matching the T-mobile ROM. I see a couple other people here also reporting it is not working. I've tried this now on two new ATT Go Phones with the same result. Going to try a new sim and see if any change.
[Windows Phone 8 General] boonesmi:
you said you tried it on 2 new att go phones, but what sim card did you use? was it one pulled from a tmo phone that has working wifi calling?

i should also add that ive not upgraded to win10 mobile via insider preview
[Windows Phone 8 General] KeinoDoggy:
Yes, the SIM is from my working properly OEM T-mobile Lumia 640 LTE, both are running WinPhone 8.1 Looking at both the OEM T-mobile and GoPhone ATT, they have slightly different firmware.
[Windows Phone 8 General] KeinoDoggy:
View attachment 3636755

Here is the two screens. OEM T-mobile on left, Flashed ATT on right.