yashsingh1/xdaforums huggingface dataset:
[Windows Phone 8 General] farscaper11:
May ask for help here? I want to reflash my lumia 640 LTE att go phone, right now windows 10 is installed and i wish to reflash it to windows 8.1 mobile.

Ive tried numerous times to reflash using the windows phone recovery tool. Ive tried using the thor2 command, ive tried using WPID tools. I think the error im getting is a mismatch ID.

If i can get the help, what information would someone need to help me out?
[Windows Phone 8 General] ianvarivs:
If you're talking about the platform ID mismatch, then I sense you're trying to "re-brand" your un-branded Lumia 640 GoPhone which isn't possible at the moment as nobody has released, yet, the cabs or method to restore the platform ID to the original one.
[Windows Phone 8 General] thomascw:
I guess i only partially succeeded, I don't suppose i changed the product code,but i did flash the t-mobile rom,which was my goal. Thanks OP
[Windows Phone 8 General] farscaper11:
The phone was never de-branded , but it was sim unlocked. The phone was given to me already installed with the win 10 ,And it currently has the At&the rom installed.

I'm simply trying to roll back to 8.1. Every method I use fails.
[Windows Phone 8 General] juicer52:
Was this an ATT phone originally?

Have you uninstalled or signed out of Developer's Preview. The phone should only be running W10 with DP.

Here is a tutorial: https://www.youtube.com/watch?v=_Iv3ojd2G2I
[Windows Phone 8 General] farscaper11:
It is a AT&T phone,its the lumia 640 American version from bestbuy RM-1073-1004 single sim, and no i had no idea i was suppose to do that. i'll give that a try.

---------- Post added at 01:10 AM ---------- Previous post was at 01:06 AM ----------

So that tutorial doesn't work. the recovery tool gives me the same error ive been seeing. But how would i sign out of the DP?
[Windows Phone 8 General] juicer52:
Preview for Developers should be listed under applications alphabetically under P. Try disabling/uninstalling it.

It's been a while since I used it and am doing this from memory.

Here's another link with tutorial.

http://arstechnica.com/gadgets/2015...-uninstall-the-windows-10-preview-for-phones/

It should work. Is your PC running Windows 7? Trying to remember if that was an issue or not. It worked for me on my PC Windows 7.

BTW, I had been using the Windows 10 beta on the 640 and it wasn't bad.

If the previous owner simply installed the Preview for Insiders and Windows 10, this was NOT flashing the phone.

What commands have you run???

If the phone was never unbranded, there would have been no reason to monkey around with the ID, thor etc. I hope you didn't inadvertently change something that would prevent the recovery tool from working.

I am getting confused so if you can retrace your steps and advise us what you did, I or someone who knows more than myself may be able to better advise you.
[Windows Phone 8 General] farscaper11:
Im on windows 10, i dont have any machine running windows 7 or 8, so those guides require that windows recovery tool, that one of the tools ive been using to try to roll it back, but it just ends up in an installation error and that windows preview that you speak of is not listed on the phone, xda wont let me post any links till i have ten posts , then i'll make a small youtube video of it so you can see.

Theres a video i made. Please check it out.

https://youtu.be/1gomgz6wskI
[Windows Phone 8 General] juicer52:
http://www.thewindowsclub.com/reinstall-windows-phone-8-1-windows-10-technical-preview

It was hard to see much of what was on your pc screen in the video.

You might try to reach out here http://forums.windowscentral.com/microsoft-lumia-640/ for some help XDA seems to be the goto source for flashing etc but you never know what you might find if reverting to 8.1 is crucial.

I can't see that you answered the question of what command you ran. Did you actually change the id? If you did but never installed the three cab files for debranding, then I would guess that you could change the id back to att. I am certainly NO expert!
[Windows Phone 8 General] farscaper11:
I ran the thor2 command to reflash the AT&T stock rom , then i ran WPiD Flash tool to try the same thing with no luck. The phone was never De-branded only sim unlocked. What i want to do is roll it back to 8.1 to De-Branded and install the tmobile rom.
[Windows Phone 8 General] juicer52:
What product code did you use in the thor 2 command??
[Windows Phone 8 General] addiboy007:
flashed T-mobile 8.1 rom and then upgraded to windows 10. I live in DC area and its upgraded with band 12 but when i did a field test my phone didnt catch band 12. I dont think many people having luck with band 12 on this AT&T phone after flashing the T-mobile rom on it.
[Windows Phone 8 General] farscaper11:
when i ran the command i used, thor2 -mode uefiflash -ffufile "Location of your downloaded ROM" -productcodeupdate "new product code" -skip_flash and thor2 -mode uefiflash -ffufile RM1073_02177.00000.15184.36016_RETAIL_prod_signed_1004_022B79_ATT-US.ffu which is 059x0B8. after i ran this command it would give me an error of, the platform ID does not match with the platform ID of the device.

https://youtu.be/869X0Uysz0Y i remade the video hopefully you can see better.
[Windows Phone 8 General] MtlOz:
Question...

I got it to flash the TMo image with WPID but when I try to change the product code, it doesn't work.

I typed this:

thor2 -mode uefiflash -ffufile "C:\Lumia\RM-1073\RM1073_02177.00000.15203.26115_RETAIL_prod_signed_1001_023F70_TMO-US.ffu" -productcodeupdate 059X0P7 -skip_flash

and then I only get this back, phone reboot and it just sits there:

Debugging enabled for uefiflash

Initiating FFU flash operation
WinUSB in use.
isDeviceInNcsdMode
Normal mode detected
Rebooting to the normal mode...
Resp from NCSd {"id":7,"jsonrpc":"2.0","result":null}

Any Idea why?

EDIT:

got that back after ~5minutes...

Operation took about 5 minutes, 49 seconds.

THOR2_ERROR_TO_COMMUNICATE_WITH_DEVICE

THOR2 1.8.2.18 exited with error code 84102 (0x14886)

Also, when I connect to WDRT, it says "Available software is older than that on your device"

Device Firmware is 02177.00000.15203.26115

Server Firmware is 02177.00000.15184.36016
[Windows Phone 8 General] farscaper11:
I get the same error when I try to flash with the windows repair tool, but I manged to change the product ID- i used 059x0B8 which is itstill lumia 640 srock rom win8.1 . The command prompt tells me that it succeeds, so after I exit out of that and then try to roll back with the windows repair tool, it just automatically fails.
[Windows Phone 8 General] sb)a:
Unfortunate, there is no way to enable Band 3
[Windows Phone 8 General] MtlOz:
Mystery solved... I used a laptop with W10 and it's all good now!

Thanks for this OP!
[Windows Phone 8 General] ac21365:
So, looking back through the thread, it doesn't appear that anyone can get band 12 working with a T-Mobile rebrand. Am I seeing that correctly?

If so, that's a shame as the AT&T gophone model is on sale for $30 again today. I was going to grab one, but won't if band 12 isn't working.

Darn.
[Windows Phone 8 General] MtlOz:
It should as per the specs:

Networks2

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

GSM max data speed DL: EGPRS 296.0kbps

GSM max data speed UL: EGPRS 236.8kbps

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

WCDMA max data speed DL: 42.2Mbps (Cat 24)

WCDMA max data speed UL: 5.76Mbps (Cat 6)

LTE FDD network10: Band 17 (700MHz), Band 2 (1900MHz), Band 4 (1700/2100 MHz), Band 5 (850MHz), Band 7 (2600MHz), Band 28 (700MHz), Band 12 (700MHz)

LTE max data speed DL: 150Mbps (Cat 4)

LTE max data speed UL: 50Mbps (Cat 4)

Of course, if your provider doesn't use the band 12, you won't see it or connect to it.
[Windows Phone 8 General] ac21365:
Someone in the slickdeals thread asked a good question:

For those of you who could NOT get band 12 working, from where did you buy your phone?
[Windows Phone 8 General] beastofexmoor:
I'll have to do some more investigating, but I flashed a phone and had wi-fi calling. Then I flashed a second phone and had no wi-fi calling. Swapped the SIM back into the first phone and now I have no wi-fi calling in that one either. Very weird.
[Windows Phone 8 General] thaddyusmaximus:
My ATT 640 is sim unlocked. If I flash the Tmobile ROM will I have to sim unlock it again? Will I lose any ATT bands doing so? Also I have another 640 that is not sim unlocked. If I flash to the Tmobile ROM will it work with tmobile sim without requiring unlock code?
[Windows Phone 8 General] beastofexmoor:
Once the phone is SIM unlocked it's unlocked. You won't have to unlock it again. Flashing the T-Mobile ROM apparently does not SIM unlock it, so you'll still have to do that to use a locked phone on T-Mobile. Flashing the T-Mobile ROM will eliminate some of the LTE bands, but I'm not sure offhand which one(s).

Follow up to my post above. I tried both phones again and the first one did eventually give me Wi-Fi calling. I reflashed firmware to the second one and it worked as well. Weird thing, but both appear to be working now so I won't complain.
[Windows Phone 8 General] speaker1264:
For those wondering, the AT&T variant firmware of the Lumia 640 has the following supported bands by default:

LTE Band 2

LTE Band 4

LTE Band 5

LTE Band 7

LTE Band 17

LTE Band 28

GSM DCS 1800

E GSM 900

GSM 850

GSM PCS 1900

B1-WCDMA 2100

B2-WCDMA 1900

B4-WCDMA US 1700

B5-WCDMA US 850

If someone could please post the T-Mobile firmware supported bands, that way people can compare the differences, that would be great. Just dial ##3282#, hit accept, hit the three dots in the bottom right, change "Network type" to manual, and hit "Supported bands" to view all available bands.
[Windows Phone 8 General] rush_ad:
Does Wi-Fi Calling only work on T-Mobile ROM? Wondering if I can debrand and still get WiFi calling.

---------- Post added at 08:12 AM ---------- Previous post was at 07:26 AM ----------

Did you get a follow up on this topic?
[Windows Phone 8 General] RockyMtn:
I have a T-Mobile 640 (bought 7/15) and it has exactly the same as you listed above with the addition of LTE Band 12.
[Windows Phone 8 General] osugsxr:
purchased one yesterday via best buy deal, confirmed lte band 12 as well. Completed all steps to flash tmobile rom, now updating to windows 10, not sure I'll keep this device though
[Windows Phone 8 General] AVNERBENARI:
I stuck on iutool installation

Hi, cannot install WPBLUE 7z itool tools downloaded from WojtasXda, plz help to resolve
[Windows Phone 8 General] KeinoDoggy:
I never did get wi-fi calling to work consistently. What did you do to get it working?

---------- Post added at 07:00 PM ---------- Previous post was at 06:58 PM ----------

Never got it to work consistently, however waiting for a reply from beastofexmoor to give me an update as to how he finally got it working.
[Windows Phone 8 General] farscaper11:
It should be a straight install.. you did unpack the zipped file right?
[Windows Phone 8 General] beastofexmoor:
Well, I'm not 100% sure I got it working "consistently." The two phones I flashed are for my parents and not my main phone so I only left the SIM in for 20 minutes or so. During that time I was able to use Wi-Fi calling fairly consistently. Before reflashing the 2nd phone I would occasionally get the wifi calling icon (phone in front of the wifi signal quality), but attempting to make a call would error out.

edit: Apparently their were WiFi calling outages last night. Not sure if that may have affected my testing.

http://www.tmonews.com/2016/02/t-mo...off-overnight-some-users-still-having-issues/
[Windows Phone 8 General] AVNERBENARI:
didn't unzip

I used 9zip to unzip attached files: 3 cabs and Nokia Database Manager but WPBLUE is not unzipping at all, it's starts in 9zip and immediately abrupt, corrupted file
[Windows Phone 8 General] farscaper11:
Try to use winrar, that's what I used to unzip them. If you get the error again, redownload and try with winrar again.
[Windows Phone 8 General] mancalledhero:
I am at the point where I need to change the product code using the thor2 command

thor2 -mode uefiflash -ffufile "Location of your downloaded ROM" -productcodeupdate "new product code" -skip_flash

But I am getting the following error:

[19:28:00.995] D_MSG : Initiating FFU flash operation
[19:28:00.995] D_MSG : WinUSB in use.
[19:29:01.026] D_MSG : Operation took about 1 minute, 1 second.
[19:29:01.028] D_ERR : THOR2 1.8.2.18 exited with error code 84003 (0x14823)

Any help would be appreciated.
[Windows Phone 8 General] EsJayEs:
"WubUSB in use" means you have something open on your computer that is using the USB connection to your phone - most likely file explorer. Make sure to close any other programs that may be communicating your phone before executing the command and you will be fine.

---------- Post added at 21:01 ---------- Previous post was at 20:44 ----------

For those on T-Mobile having issues with band 12, I wonder if flashing the .nvi file would fix your issue. Perhaps fix or improve Wi-Fi calling too.
[Windows Phone 8 General] mancalledhero:
Thanks for the insight! I couldn't find what was using the USB connection even after closing down every process, but I ended up flashing with WPID successfully. After flashing the rom, I ran the command for the product code update. Based on the output in the command window, it looked as though it was successful, however the phone became unresponsive. I had to pull the battery out and I powered it on after reassembling it. It booted into a black screen with an exclamation mark. I didn't know what to make of it, so I just reflashed the TMO rom. Now I am back up and running, but I have another question. Do I need to run the product update command again? How do I check that it was completed properly the first time I did it?
[Windows Phone 8 General] classicalmood:
I keep getting the error code THOR2_ERROR_FA+FFU_STR_HDR_INVALID_PLATFORM. I have an Lumia 640 for AT&T, I have tried to flash to TMobile. Please help.

---------- Post added at 04:00 AM ---------- Previous post was at 03:51 AM ----------

Did you mean that you need to use a computer with W10 in order to avoid the error?
[Windows Phone 8 General] C3cars:
Since Lumia Flash Tools or WPID isn't available, can we get an updated tutorial please.
[Windows Phone 8 General] speaker1264:
I believe you can download the LumiaFlashTools from here:

http://xdaforums.com/devdb/project/dl/?id=13801

My question though, is what is the difference between this tutorial, and Kaptaiin's? Doesn't his guide accomplish the same thing?
[Windows Phone 8 General] C3cars:
Thank you!
[Windows Phone 8 General] penyo5:
If WDRT shows firmware version 02177.00000.15203.26115 as a software available on server, you have the T-Mobile firmware. Your phone has the T-Mobile product code. Otherwise WDRT would show the AT&T's version, e.g., 02177.00000.15184.36016.

[IMG="WDRT Screenshot"]http://s22.postimg.org/b0vhvjzoh/WDRT.png[/IMG]
[Windows Phone 8 General] heavencloud:
I was having band 12 problem on Tmobile until I used the command below to update the NVI. Now I'm able to connect to band 12 in field test mode.

thor2 -mode uefiflash -ffufile "C:\Lumia\RM-1073\RM1073_02177.00000.15203.26115_RETAIL_prod_signed_1001_023F70_TMO-US.ffu" -do_full_nvi_update -do_factory_reset
[Windows Phone 8 General] wmedrano55:
This is what I was looking for! You're the MAN. I now have band 12 working with above command! Could never get it going until now. This was the last piece of the puzzle. Now have band 12 and wifi calling using debranded att lumia 640. Thank you so much.

---------- Post added at 05:39 PM ---------- Previous post was at 05:19 PM ----------

RETAIL_prod_si gned. Just to point out. Small typo with "si gned". Gave me an error when i copied and pasted. Just remove the space between i and g in signed.
[Windows Phone 8 General] charlotted:
Won't the factory reset remove all your programs and settings??

Is it possible to update the NVI without having to reinstall everything?
[Windows Phone 8 General] speaker1264:
Edit: Nevermind, stupid mistake.
[Windows Phone 8 General] C3cars:
Hi guys, I need your help. I am trying to verify step 7, by holding the volume UP and the power buttons at the same time does not place me into the lighting gear screen. I have tired to reflag the 3 cabs, but I am receiving an error 0x80188302.
[Windows Phone 8 General] speaker1264:
You only need to press the power button down until the phone vibrates, then let go of the power button, but continue to hold down the volume up until you see the lightning gear screen. To be honest it doesn't matter though, because as long as you didn't get an error the first time you ran it, and the phone already ran the data migration, then the error you got just means that the cabs have already gone through, and is the verification you need anyway. You are ready to flash the ffu file.
[Windows Phone 8 General] C3cars:
Thank you so much! I enjoy this community![emoji106]
[Windows Phone 8 General] wogeboy:
FYI - walmart now has 640 on sale (U.S) 29.00
[Windows Phone 8 General] kokku:
I de-branded my ATT phone and using WP10 on t-mobile. No Wi-fi enabled. I used the above command without "-do_factory_reset" option. command was successful, but the phone went to 8.1 update 2 with factory reset. Is this normal? I was under the assumption that it will still retain WP10.

If I upgrade now to WP10, will the wi-fi calling works, Can anyone confirm that please?

Thanks to all for the support
[Windows Phone 8 General] googcs:
I need some help starting on step 9

9. Congrats you have now over written the DevicePlatformID in your phone so that you can now de-brand your phone to any other Lumia 640 LTE ROM.

a. To make sure that you have successfully applied the cabs and the DeicePlatformId has changed, follow these addition steps.

b. Download Kaptaiin LumiaFlashTools, found here. Cannot find this file on that page - anyone?

c. Extract the archive to a folder and navigate to the WPID folder and run the "Start.bat" to initial the tool. - Extract what from where to where? Do you mean extract LumiaFlash tool? If I can find it.

d. Once the program has launched, click on the "Flash a Windows Phone image onto your phone" option.

e. With your phone disconnected from the PC. Turn off your phone.

f. Press the POWER BUTTON and hold down the VOLUME UP button till you see the lighting gear screen, and then connect your phone to the PC.

g. Connect your phone to your PC, and go back to the Windows Phone Image Designer application. You should now see that the device is recognized as "Flash-able Devices: Nokia.MSM8926.P6204.1.1", which indicates that the process above has finished successfully.

h. You can now proceed to de-brand your phone with another Lumia 640 LTE image using this same method, by selecting the ROM to flash in the Image Designer window and hitting flash button or by following the method below.
[Windows Phone 8 General] ac21365:
Excellent! I had high hopes that someone would figure out how to get band 12 working!

I got my handset from Best Buy this weekend, but haven't had time to fiddle with it yet. I should be able to get to it tonight. I'll update this post with my results once I get the phone flashed over to T-Mobile.
[Windows Phone 8 General] penyo5:
It is very unlikely that wifi calling will work with the current W10M preview build 10586.107. It is a know issue in W10. However, according to this forum, MS seems to have a fix now, which they have provided to the mobile operators for testing. I had the wifi calling working under W8, but I could not get it to work under W10. If wifi calling is an important feature for you, you probably should wait for the official upgrade to W10.
[Windows Phone 8 General] googcs:
Should post the verification step with updated info and details. I went ahead with remaining and steps and it worked. Thx
[Windows Phone 8 General] richsharman:
Remember, the quoted text has a space that is not supposed to be there in the word "si gned". Remove the space before using.

"C:\Lumia\RM-1073\RM1073_02177.00000.15203.26115_RETAIL_prod_si gned_1001_023F70_TMO-US.ffu"
[Windows Phone 8 General] ianvarivs:
Thanks for the heads up! I was supposed to do this too using the AUS CV ROM, but I read your post XD

I'm on the Argentina ROM right now, looking forward to your report on the Mexican ROM.
[Windows Phone 8 General] paulsaz:
Do I need to flash the T-mobile rom if I am not in a Band 12 area and don't use wifi calling? I just want use the phone for regular calls and LTE data on the Walmart $30 plan.
[Windows Phone 8 General] penyo5:
You don't need to even de-brand the phone if you don't care about the T-Mobile special features. You just need SIM unlock from AT&T to be able to use it with another operator's SIM card.
[Windows Phone 8 General] paulsaz:
Thanks, I bought the phone today at an ATT store for $29.99, I sent in the unlock request this afternoon. I'm going to hold off opening the box until I get the unlock code.
[Windows Phone 8 General] jamssx:
No excuse for not having a backup but if you are already using the phone and have a lot installed and want to by-pass having to restore everything the -skip_flash parameter should work (it did for me).

i.e. replace tmous.ffu with the name of the ffu you are using...

thor2 -mode uefiflash -ffufile tmous.ffu -skip_flash -do_full_nvi_update

thor2 -mode uefiflash -ffufile tmous.ffu -skip_flash -do_factory_reset
[Windows Phone 8 General] ac21365:
And there it is, band 12. Wifi calling works as well. Thank you -so- much! Now that I know this phone can be completely converted to T-Mobile, it is

totally

worth the $30 it costs when on sale. Tempted to go buy more.
[Windows Phone 8 General] Dibbyd:
Uhh, that picture shows you connected to Band 4 (look next to Sys Mode). Go into the Field Test settings and disable all other bands besides 12 and then go back to that screen and see if it says 12 - LTE.
[Windows Phone 8 General] ma678:
Do I have to unlock my Lumia 640 AT&T device before debranding it?

Is there a specific ROM for Canadian carriers, e.g. Telus? Or is flashing T-Mobile ROM my only option?

Thanks.
[Windows Phone 8 General] ac21365:
The EARFCN is what matters here. 5035 is T-Mobile band 12. 2300 is Band 4 20x20 here in DFW.

I went and checked the TAC and cell ID's against my Xperia Z3. They matched, it's band 12.

I had a lumia 640 back when they sold the T-Mobile branded model; I can't recall whether "Sys Mode 4-LTE" changed when it hops bands. Everything else swaps over properly when it hops bands.
[Windows Phone 8 General] Rab_Kun:
Thank you for the post both here and on SD, I was successful in getting my Lumia 640 swapped over to the t-mo rom with voicemail and wifi calling functioning perfectly. When I heard the Walmart (clamshell) version was having problems with band 12 and wifi calling, I was starting to wonder if AT&T had poison pilled (modified the rom for WM) the phone due to all of the reselling going on.

---------- Post added at 10:43 AM ---------- Previous post was at 10:28 AM ----------

Yes, you'd need to do a sim unlock and follow steps 1-8 in this guide to unlock the phone.

The T-mobile rom isn't your only option, if you've read through the thread, roms are available for many different carriers internationally. I'm not sure what the product code for Telus (or Rogers) would be, unfortunately Google only showed posts having it being used on those carriers after being bought from MS directly, but if you had the product code you could check mrcrab(dot)net's nokia firmware page for the download you'd need.

The other alternative is to do a sim unlock and then change the APN and MMS settings to Telus (or Rogers), but the phone would still be at&t branded.
[Windows Phone 8 General] Dibbyd:
Thanks for the clarification. I don't know that the Sys Mode means band 4, I just noticed that it went away after disabled band 4. I'll be updating my nvi today or tomorrow. Thanks again for confirming band 12 works.
[Windows Phone 8 General] mancalledhero:
You do not need to SIM unlock before debranding the phone. I debranded the phone prior to receiving the unlock code from AT&T and was able to unlock the phone afterwards for use with T-mobile.