I bought a Lumia 920 from EE which i have unlocked and using with my Three (3) simcard.
I've been unsuccessful in downloading or finding Three (3) UK firmware for this phone. I want to flash it because MMS doesn't appear to work and data speeds appear to be poor on the EE firmware.
Any ideas?
SicilianTony said:
I bought a Lumia 920 from EE which i have unlocked and using with my Three (3) simcard.
I've been unsuccessful in downloading or finding Three (3) UK firmware for this phone. I want to flash it because MMS doesn't appear to work and data speeds appear to be poor on the EE firmware.
Any ideas?
Click to expand...
Click to collapse
data speeds are slow becuase your model does not support the frequency your provider is using. There are as of last count two version of the 920 and they apparently have different hardware radios. So just flashing may not fix your problem.
siciliantony said:
i bought a lumia 920 from ee which i have unlocked and using with my three (3) simcard.
I've been unsuccessful in downloading or finding three (3) uk firmware for this phone. I want to flash it because mms doesn't appear to work and data speeds appear to be poor on the ee firmware.
Any ideas?
Click to expand...
Click to collapse
rm-821 var euro1 gb h3g sl black 059r7z3
pete_es said:
rm-821 var euro1 gb h3g sl black 059r7z3
Click to expand...
Click to collapse
Thanks for this. Silly question but is this ok to flash if my phone is white?
I originally bought a PAYG Lumia 920 from EE in Dec 2012. I got it unlocked and used it with my Three SIM and had no problems. My SIM only contract came up for renewal in April and Three offered me a new Lumia 920 on the One Plan for £25 a month and no upfront charge for the phone. I sold my original Lumia and went for the deal making a profit overall. It came with Three firmware, obviously, and again no problem. I since upgraded the firmware to the generic Australian 1314 version and still everything works fine. Three have since unlocked the phone for me at a cost of £15.
I don't see that the specific Three firmware will help particularly, but I have it if you still want to go ahead. You can also follow one of the numerous guides on wpcentral.com and use the Nokia Care Suite to download and install the firmware as long as you have access to Windows. The product code for the Three Lumia 920 is 059R7Z3.
Might be worth downloading the Lumia Pusher app which lets you ensure you have the latest Nokia utilities installed, like Network+ and Access Point.
The only difference between the firmwares for different colour phones is the default colour scheme - for instance, if you have a red Lumia 920 the 'red' firmware will set up the default accent colour to red. Makes no other difference at all. You can easily do this step manually.
I changed my Lumia housing from black to red and made no change to the firmware, just selected red for my colour scheme.
Thanks for the helpful reply.
I flashed both Three UK rom and generic and didn't notice a difference in data speeds so ive decided to stick with generic incase Three UK have long delays in pushing updated firmware.
Related
Someone has a posted guide on how to flash your lumia 920.
aydon.wordpress.com/2012/11/28/windowsphonehow-to-flash-your-lumia-920
(please add www above)
I was wondering if its possible to flash your ATT to Rogers firmware and then be able to use
AWS 1700 on Tmobile
What do you guys think?
ahg1 said:
Someone has a posted guide on how to flash your lumia 920.
aydon.wordpress.com/2012/11/28/windowsphonehow-to-flash-your-lumia-920
(please add www above)
I was wondering if its possible to flash your ATT to Rogers firmware and then be able to use
AWS 1700 on Tmobile
What do you guys think?
Click to expand...
Click to collapse
Have you bothered to search? You can't unlock the AT&T L920 yet so even if it worked, you wouldn't be able to use it on T-Mobile for another 6 months. There's no way to know if it even enables the 1700MHz band unless someone flashes the rogers firmware and then goes to roam on some carrier with 1700MHz with their AT&T SIM card.
you can flash Rogers ROM to the AT&T Lumia 920 and vice versa no problem. those are the only two devices that i know you can flash with any RM-820 ROMs as they have the same device/model ID, RM-820. tried flashing RM-821 ROMs onto my Lumia 920 and it didn't let me. even the developer ROM did not let me flash it. i'm using Rogers Lumia 920 though, but i have an AT&T Lumia 920 ROM as well, and flashed on both.
iskuruts said:
you can flash Rogers ROM to the AT&T Lumia 920 and vice versa no problem. those are the only two devices that i know you can flash with any RM-820 ROMs as they have the same device/model ID, RM-820. tried flashing RM-821 ROMs onto my Lumia 920 and it didn't let me. even the developer ROM did not let me flash it. i'm using Rogers Lumia 920 though, but i have an AT&T Lumia 920 ROM as well, and flashed on both.
Click to expand...
Click to collapse
ATT ROM will let u enable internet sharing in other service provider like telus? ROGERS ROM seems disable this feature in other providers.
iskuruts said:
you can flash Rogers ROM to the AT&T Lumia 920 and vice versa no problem. those are the only two devices that i know you can flash with any RM-820 ROMs as they have the same device/model ID, RM-820. tried flashing RM-821 ROMs onto my Lumia 920 and it didn't let me. even the developer ROM did not let me flash it. i'm using Rogers Lumia 920 though, but i have an AT&T Lumia 920 ROM as well, and flashed on both.
Click to expand...
Click to collapse
Will the rom disable the AWS frenquency or it will keep it?
I was really hoping this would at the very least allow me to use my Rogers sim card in my ATT 920, since the recovery file included a suspicious looking file named something like *Rogers_ATT_FIDO_simlock.bin* or something similar. But flashing the Rogers rom does nothing in terms of unlocking for the ATT Lumia
sonkiomi said:
I was really hoping this would at the very least allow me to use my Rogers sim card in my ATT 920, since the recovery file included a suspicious looking file named something like *Rogers_ATT_FIDO_simlock.bin* or something similar. But flashing the Rogers rom does nothing in terms of unlocking for the ATT Lumia
Click to expand...
Click to collapse
Well in term of flashing, it won't unlock your phone at all. The unlock mechanism bases on your phone IMEI. Flashing can only debrand your phone to whatever you want. Furthermore, flashing some variant might allow the phone to receive firmware update from that variant which could lead to potential enable some features.
so if you flash this ROM does it debrand all the AT&T crap? Does it also let you use internet sharing properly on another carrier?
creamhackered said:
so if you flash this ROM does it debrand all the AT&T crap? Does it also let you use internet sharing properly on another carrier?
Click to expand...
Click to collapse
Maybe or maybe not. Someone need to try to see. Tethering is just only the software inside WP8, but sometime it depends on the firmware version that allows it to be working properly.
Guys this is HUGE and as I will explain bellow, is exactly what we were waiting for.
The method reminds me a lot of what we used to do with Nokia Symbian devices, we were able to change the device product code, product codes were broken down per countries and regions and then re-flash the device with the country specific firmware. This is how we use to debrand and add local languages to the Nokia Symbian Devices.
Now assuming that the German Guide is accurate and we can successfully flash the Rogers firmware to the AT&T Lumia 920 and the opposite, since this is the exact same hardware here are some key points:
1. First and to answer creamhackered question. NO by flashing AT&T phone with Rogers firmware, even thought it will take off the AT&T crapware, it will put in the Rogers branding. Rogers firmware though it only contains the Rogers Logo on startup screen and the Rogers my account App pre-install, which you can uninstall manually, nothing major but its still Rogers Branded.
2. Now this is the HUGE point and as of now I didn't saw anyone speaking or realizing it. There is a third Lumia 920 based on the same hardware and this is the Developer Edition which includes a pure/clean Firmware completely unbranded. Even thought the Developer Edition firmware is not yet available to the server yet, its only a matter of time until it pops up to the Nokia Update servers, I personally expect that to happen with the first major Windows Pone update. In other words if that happens and if that German Guide works, then we will be able to completely debrand the American variant of the Lumia 920 by flashing on them the Developers Edition Firmware! Especially the Rogers models that does not contain a carrier logo on the phone, will be exactly the same as the unlocked Lumias they sell in Europe, with the American Bands!!
Finally, assuming that the AT&T models will be lock for a couple of months (remember branded and locked devices are different things) the only negative aspect is that the Rogers Lumia 920 (which is unlockable(!)) only comes in Black for now, the Yellow color is rumored to also be available soon, but that's about it.
Again this is HUGE!!
i just flash rogers rom and firmware to my att lumia 920
my internet was littile slow with att stock rom and othes things but now my att lumia 920 has the rogers version 8.0.9903.10 firmware version 1232.2109.1242.1002 and i hace no problems , everything feels beter for me
alfaro58 said:
my internet was littile slow with att stock rom and othes things but now my att lumia 920 has the rogers version 8.0.9903.10 firmware version 1232.2109.1242.1002 and i hace no problems , everything feels beter for me
Click to expand...
Click to collapse
Can you please tell me if you are getting the Rogers Logo when you turn the phone ON now?
And also did you used Nokia Care Software to make the switch? The firmware for the Developer edition is not available right? Only AT&T and Rogers?
Yep I get the Rogers logo and I use Nokia care software and I didn't see the firmware for developers
Sent from my RM-820_nam_canada_200 using Board Express
alfaro58 said:
my internet was littile slow with att stock rom and othes things but now my att lumia 920 has the rogers version 8.0.9903.10 firmware version 1232.2109.1242.1002 and i hace no problems , everything feels beter for me
Click to expand...
Click to collapse
Try tethering to see if it will work with AT&T phone. Now if AT&T 920 can be unlocked, we could see if the Rogers firmware could enable the AWS band or not.
No , I got a message that said, you have no cellular connection check your connection and try again , everything works very good on my Lumia 920 ,mms , internet , but I don't know why a can not turn on internet sharing but i really don't use it
Sent from my RM-820_nam_canada_200 using Board Express
alfaro58 said:
No , I got a message that said, you have no cellular connection check your connection and try again , everything works very good on my Lumia 920 ,mms , internet , but I don't know why a can not turn on internet sharing but i really don't use it
Sent from my RM-820_nam_canada_200 using Board Express
Click to expand...
Click to collapse
That because the Rogers firmware might block the tethering. There is a way to work around that has been posted in xda. It involves the process of adding another keyboard to trigger update and then tethering will work. Not really sure if it will work on Rogers firmware or not, but it works on dev firmware.
I already tried that trick with no luck and change my apn setting to see if it work but nothing happen ( this is the apn that I have, apn is only the word "phone" ) and my internet work great , one thing that I notice is that I have the option to choose 2g,3g and lte with Rogers rom
Sent from my RM-820_nam_canada_200 using Board Express
alfaro58 said:
I already tried that trick with no luck and change my apn setting to see if it work but nothing happen ( this is the apn that I have, apn is only the word "phone" ) and my internet work great , one thing that I notice is that I have the option to choose 2g,3g and lte with Rogers rom
Sent from my RM-820_nam_canada_200 using Board Express
Click to expand...
Click to collapse
So the internet sharing does not work even though you flashed the Rogers rom to ATT's Lumia 920 device? That's a bad news= =. I really want to use internet sharing with 3GB data plan. 5GB is too much. Let me know if you figure out a way to make it work. Thank you!
Nop , now when I try to turn on internet sharing the message to contact att to enable this feature shows
Sent from my RM-820_nam_canada_200 using Board Express
The Rodgers ROM disables tethering when unlocked somehow. If anyone has a technical explanation of how this is possible please explain!
So I bought a Dev Lumia 920 used off eBay since I'm using T-Mobile and need the 1700mhz band.
I turned it on today for the first time (again, the phone is used so this is the first time for me) and briefly the AT&T logo appears...
The phone has AT&T live tiles too so now I'm starting to think I was bait-n-switched...
However the IMEI number in device settings matches the IMEI on the Dev box and the phone is missing the AT&T logo at the top left. I can prove it with pictures, lol.
So anyone know what's going on with this phone? Looks Like I have Dev hardware but AT&T software?
I've done a hard reset and the AT&T software stays... am i stuck with AT&T software?
With a T-Mobile SIM the phone makes calls, but only lets me access EDGE speeds...
Any insight is appreciated!
Onyx Z32 said:
So I bought a Dev Lumia 920 used off eBay since I'm using T-Mobile and need the 1700mhz band.
I turned it on today for the first time (again, the phone is used so this is the first time for me) and briefly the AT&T logo appears...
The phone has AT&T live tiles too so now I'm starting to think I was bait-n-switched...
However the IMEI number in device settings matches the IMEI on the Dev box and the phone is missing the AT&T logo at the top left. I can prove it with pictures, lol.
So anyone know what's going on with this phone? Looks Like I have Dev hardware but AT&T software?
I've done a hard reset and the AT&T software stays... am i stuck with AT&T software?
With a T-Mobile SIM the phone makes calls, but only lets me access EDGE speeds...
Any insight is appreciated!
Click to expand...
Click to collapse
It looks like your best bet is to flash it!
So download Nokia Care Suite and navifirm+ 1.7
You're looking for the following:
Products: Nokia Lumia 920 (RM-821)
Releases: 1232.2110.1244.3002
Variants: RM-821_ROW_DeveloperDevice_VAR251040_Black_v2_Black (059R4H6)
Then find online how to flash it, and it SHOULD work. Not putting any promises though as I have got an EE-Locked Lumia 920
blakepender said:
It looks like your best bet is to flash it!
So download Nokia Care Suite and navifirm+ 1.7
You're looking for the following:
Products: Nokia Lumia 920 (RM-821)
Releases: 1232.2110.1244.3002
Variants: RM-821_ROW_DeveloperDevice_VAR251040_Black_v2_Black (059R4H6)
Then find online how to flash it, and it SHOULD work. Not putting any promises though as I have got an EE-Locked Lumia 920
Click to expand...
Click to collapse
I think he probably has a North American version (RM-820) so I guess that flashing the RM-821 firmware would just brick the device (meaning that it would have to be re-flashed with a RM-820 firmware then in order to un-brick it)
But if your phone is a RM-820 I guess you should be able to flash it to the Rogers Canada firmware. And since the Rogers version of the phone does support the 1700 MHz band I think that this might unlock that band on your phone too.
But first thing I would do if I were you is to check your phone's product code (you can do that using the "Product Support Tool For Store 5.0" in the Nokia Care Suite) and then try to download & flash the firmware matching that product code first.
Only if that doesn't work I would try flashing the Rogers firmware (only if your device is a RM-820 though because flashing an RM-821 with the Rogers firmware would probably brick it too)
Thanks guys, I definitely have a Dev phone... So it is 820 or 821? I'll run Nokia Care Suite and see what it comes up with.
Update:
I can't find the original RM-820_nam_canada_246 anywhere.
I tried to flash to RM-821_ROW_DeveloperDevice_VAR251040_Black_V2_Black but that won't work because the device is RM-820.
Then I tried an RM-820_Rogers_Canada flash and it worked to get the phone started but still no T-Mobile 3G.
Damn, lol.
Just wondering if there are any guides out there that I can use to flash my new Vodafone UK branded Lumia 920 to either Telstra or unbranded?
I am with Telstra and the phone correctly supports the 3G and LTE network, but I just want to change it from Vodafone branding
.
Is it the same process as flashing a Lumia 800? Using Nokia CareSuite and if so can someone please post the links to all the software needed?
I would greatly appreciate any feedback. Thanks in advance.
Simmo3D said:
Just wondering if there are any guides out there that I can use to flash my new Vodafone UK branded Lumia 920 to either Telstra or unbranded?
I am with Telstra and the phone correctly supports the 3G and LTE network, but I just want to change it from Vodafone branding
.
Is it the same process as flashing a Lumia 800? Using Nokia CareSuite and if so can someone please post the links to all the software needed?
I would greatly appreciate any feedback. Thanks in advance.
Click to expand...
Click to collapse
Are you sure you have a Lumia 920? The reason I ask is because a Vodafone UK variant of the 920 doesn't actually exist. The only networks that are selling the 920 in the UK are EE, Orange and T-Mobile.
I'll vouch for it being a 920. I saw the Vodafone Lumia 920 red models on Mobicity a few days ago. I imagine that's what this person got.
JemaKnight said:
I'll vouch for it being a 920. I saw the Vodafone Lumia 920 red models on Mobicity a few days ago. I imagine that's what this person got.
Click to expand...
Click to collapse
Mobicity only sell unlocked and unbranded phones. They don't sell network branded phones or act as a middleman selling contracts for the networks. They 920 they are selling is a SIM free unbranded one for £599.95. As it is at the moment the only networks allowed to sell the 920 in the UK are EE, T-Mobile and Orange.
Just bought a Nokia 920 black that had a Vietnam rom. Was unable to get 4G on AT&T's network. I used a Finland rom, but still no 4G. Anyone have any idea what the proper product code for the Nokia 920 black that will enable 4G on AT&T's network in North America? Thanks for any replies.
check USA ROM's not EU...
try with Navifirm+ v2.3 but you must give donation to get access to firmwares
or try this one
http://forum.xda-developers.com/showthread.php?t=2412229
paulday said:
Just bought a Nokia 920 black that had a Vietnam rom. Was unable to get 4G on AT&T's network. I used a Finland rom, but still no 4G. Anyone have any idea what the proper product code for the Nokia 920 black that will enable 4G on AT&T's network in North America? Thanks for any replies.
Click to expand...
Click to collapse
http://forum.gsmhosting.com/vbb/f60...ting-care-suite-download-1660094/#post9434277
Here is all product codes for 820/821/822 versions
Who can decipher the product descriptions?
boril said:
Here is all product codes for 820/821/822 versions
Click to expand...
Click to collapse
Thanks, but I've looked thru the product codes. FYI, AT&T US developer code is not listed, along with any US north America codes, that I can figure out. Deciphering the descriptions to get the right one is almost impossible, for example: VAR IMEA-MEA3 EG LY CV BLACK. I know it's black, but that's about it. I have a funny feeling that I'm not the only one having this issue, which is why I asked for the "product code" for a us/English 920 rom.
That said, I was able to look at the picture you posted and got the product code for AT&T US developer code and am downloading it now. Before burning it, I would like to find the product code for the Black 920 US developer code (Non AT&T, unbranded), if there's one out there.
Is there a way to see the full rom list on Nokia's server, without having to put the product code in? Just seems that there should be an easier way to see their available roms.
On another note, anyone know how to change the mobile operator listed under Setting/extras+info? My AT&T LQ Quantum had a MFG program that would let you change all kinds of stuff.
Again, Thanks for any help.
paulday said:
Is there a way to see the full rom list on Nokia's server, without having to put the product code in? Just seems that there should be an easier way to see their available roms.
Click to expand...
Click to collapse
navifirm+ v2.3
dxdy said:
navifirm+ v2.3
Click to expand...
Click to collapse
Got it. It only lets you put in one product code at a time. Please explain how you can use navifirm to see a complete list of the product codes available. Going thru the interface, I'm not seeing how that is possible.
paulday said:
Got it. It only lets you put in one product code at a time. Please explain how you can use navifirm to see a complete list of the product codes available. Going thru the interface, I'm not seeing how that is possible.
Click to expand...
Click to collapse
search by product - releases and look in variants...
I'm dumb!
dxdy said:
search by product - releases and look in variants...
Click to expand...
Click to collapse
Nice pic! Where do you "search by product"? I have only one box at the top and it only accepts one product code at a time. Do I need to pay to get this "search by product" feature? Please tell me what I'm doing wrong! is there a hidden button?
paulday said:
Nice pic! Where do you "search by product"? I have only one box at the top and it only accepts one product code at a time. Do I need to pay to get this "search by product" feature? Please tell me what I'm doing wrong! is there a hidden button?
Click to expand...
Click to collapse
down left, where first arrow point
Unable to edit that box
dxdy said:
down left, where first arrow point
Click to expand...
Click to collapse
The box is ghosted and unable to click to type in it. See the attached jpeg. I've tried clicking on it to no avail.
Full options is available only if you pay donations. After that you get registration details for unlocking navifirm. I hoped searching working without paying but seems not.
Sent from my Nokia Lumia 920 using Board Express
paulday said:
Thanks, but I've looked thru the product codes. FYI, AT&T US developer code is not listed, along with any US north America codes, that I can figure out. Deciphering the descriptions to get the right one is almost impossible, for example: VAR IMEA-MEA3 EG LY CV BLACK. I know it's black, but that's about it. I have a funny feeling that I'm not the only one having this issue, which is why I asked for the "product code" for a us/English 920 rom.
That said, I was able to look at the picture you posted and got the product code for AT&T US developer code and am downloading it now. Before burning it, I would like to find the product code for the Black 920 US developer code (Non AT&T, unbranded), if there's one out there.
Is there a way to see the full rom list on Nokia's server, without having to put the product code in? Just seems that there should be an easier way to see their available roms.
On another note, anyone know how to change the mobile operator listed under Setting/extras+info? My AT&T LQ Quantum had a MFG program that would let you change all kinds of stuff.
Again, Thanks for any help.
Click to expand...
Click to collapse
?????
059S0N0 RM-820 VAR AMERICA LTA1 MX CV YELLOW
059S0M8 RM-820 VAR AMERICA LTA1 MX CV BLACK
059S3M2 RM-820 VAR AMERICA LTA1 MX CV RED
059R2L5 RM-820 AT&T DEVELOPER DEVICE BLK <-----------------------------------------------------------------
059R749 RM-820 VAR AMERICA AR TELECOM SL SKD BLK
059S659 RM-820 VAR AMERICA AR TELECOM SL SKD WHI
059S660 RM-820 VAR AMERICA AR TELECOM SL SKD YEL
059S339 RM-820 VAR AMERICA LTA1 PY TIGO SL YELLO
059S338 RM-820 VAR AMERICA LTA1 PY TIGO SL BLK
I took it from the same page
Mine is with the same rom
boril said:
?????
059S0N0 RM-820 VAR AMERICA LTA1 MX CV YELLOW
059S0M8 RM-820 VAR AMERICA LTA1 MX CV BLACK
059S3M2 RM-820 VAR AMERICA LTA1 MX CV RED
059R2L5 RM-820 AT&T DEVELOPER DEVICE BLK <-----------------------------------------------------------------
059R749 RM-820 VAR AMERICA AR TELECOM SL SKD BLK
059S659 RM-820 VAR AMERICA AR TELECOM SL SKD WHI
059S660 RM-820 VAR AMERICA AR TELECOM SL SKD YEL
059S339 RM-820 VAR AMERICA LTA1 PY TIGO SL YELLO
059S338 RM-820 VAR AMERICA LTA1 PY TIGO SL BLK
I took it from the same page
Mine is with the same rom
Click to expand...
Click to collapse
Sorry, I was only looking under rm-821. At the time I didn't know that rm-820 was America and rm-821 was the international version.
Still no 4g with AT&T developer rom on rm-821
Quick update on my Nokia Lumia 920, (model rm-821).
I updated my wife to the Nokia Lumia 920 on AT&T's network here in the NE USA thru their upgrade. Great 4g speed, great phone. Due to contract issues (I go thru phones like water.), I went and bought a Black International, factory unlocked Nokia Lumia 920. The 920 had a Vietnam rom, and would not connect at 4g, only 3g. In the settings, there wasn't even an option for 4g, only 2g & 3g.
Going thru the forums, I saw people were reporting using US/Canadian roms to enable 4g on International 920's (model rm-821).
Thanks to the great help from people here on the forum, I downloaded the AT&T Developers rom (For America's 920's the model is rm-820, something that I was not aware of at first.) and was able to burn it to my 920.
After completing the rom burn and setting the 920 up, I called AT&T and had them re-provision the phone for 4g. This is where AT&T pushes configuration data to the phone for network and features, etc...
The phone works great, clean fast and without all the AT&T crap that was on my wife's 920. The problem? Still no 4g. Still stuck at 3g/H+, about 2/3 of the speed that my wife gets on her 920. Now I had read that using the us roms would enable the 4g mode, but after two days now the phone is still in 3g/H+. Surprisingly, the settings now show a 4g option in networking, which I've selected, but still no 4g.
So the bottom line: Do I need to return the phone and make sure that I get a US/Canadian (model rm-820) unlocked to get 4g?
I never had this problem with other unlocked international phones on 3g. Is this strictly a 4g standards issue between the international and domestic model?
Anyone have any knowledge about this, or ideas/observations?
paulday said:
Quick update on my Nokia Lumia 920, (model rm-821).
I updated my wife to the Nokia Lumia 920 on AT&T's network here in the NE USA thru their upgrade. Great 4g speed, great phone. Due to contract issues (I go thru phones like water.), I went and bought a Black International, factory unlocked Nokia Lumia 920. The 920 had a Vietnam rom, and would not connect at 4g, only 3g. In the settings, there wasn't even an option for 4g, only 2g & 3g.
Going thru the forums, I saw people were reporting using US/Canadian roms to enable 4g on International 920's (model rm-821).
Thanks to the great help from people here on the forum, I downloaded the AT&T Developers rom (For America's 920's the model is rm-820, something that I was not aware of at first.) and was able to burn it to my 920.
After completing the rom burn and setting the 920 up, I called AT&T and had them re-provision the phone for 4g. This is where AT&T pushes configuration data to the phone for network and features, etc...
The phone works great, clean fast and without all the AT&T crap that was on my wife's 920. The problem? Still no 4g. Still stuck at 3g/H+, about 2/3 of the speed that my wife gets on her 920. Now I had read that using the us roms would enable the 4g mode, but after two days now the phone is still in 3g/H+. Surprisingly, the settings now show a 4g option in networking, which I've selected, but still no 4g.
So the bottom line: Do I need to return the phone and make sure that I get a US/Canadian (model rm-821) unlocked to get 4g?
I never had this problem with other unlocked international phones on 3g. Is this strictly a 4g standards issue between the international and domestic model?
Anyone have any knowledge about this, or ideas/observations?
Click to expand...
Click to collapse
You won't get 4g/ LTE with rm-821 (this is europe/international) on AT&T due difference bands (radio channels) LTE used than the rm-820 (USA/canada). Switching the ROMs doesn't change supported band .I'm not sure if rm-821 Developers version is pentaband, so my advise is return the phone and be sure you're getting RM-820.
Look for 920_RM-820-821-822_SM_L3&4_v.2.0.pdf so you can see the difference between RM-820/821/822
Because I'm a layman, I believe a little backstory for all of the other laymen helps to understand the issue.
I bought a new Lumia 920 unlocked with the RM-821 firmware from Best Buy. So I when it arrived, I threw my AT&T Lumia 900's SIM into the 920, called up AT&T to make the swap and it was working. The problem I have since discovered is the RM-821 variant does not use the same bands as an AT&T-branded 920 running RM-820 firmware, which means I cannot get LTE on my new unlocked, unbranded 920. Neither do i travel the world nor live outside of North America, so it's stupid for me to be running a ROM that cannot access my carriers LTE bands.
I've read through several threads on here and elsewhere researching the topic. Other than failed attempts to revert back to RM-820 from an RM-820 AT&T device after converting to RM-821, I have not found any definitive answers .
Is it possible to go from a factory flashed RM-821 Lumia 920 to RM-820 AT&T firmware? Thanks to everyone ahead of time for your responses.
tulsapete said:
Because I'm a layman, I believe a little backstory for all of the other laymen helps to understand the issue.
I bought a new Lumia 920 unlocked with the RM-821 firmware from Best Buy. So I when it arrived, I threw my AT&T Lumia 900's SIM into the 920, called up AT&T to make the swap and it was working. The problem I have since discovered is the RM-821 variant does not use the same bands as an AT&T-branded 920 running RM-820 firmware, which means I cannot get LTE on my new unlocked, unbranded 920. Neither do i travel the world nor live outside of North America, so it's stupid for me to be running a ROM that cannot access my carriers LTE bands.
I've read through several threads on here and elsewhere researching the topic. Other than failed attempts to revert back to RM-820 from an RM-820 AT&T device after converting to RM-821, I have not found any definitive answers .
Is it possible to go from a factory flashed RM-821 Lumia 920 to RM-820 AT&T firmware? Thanks to everyone ahead of time for your responses.
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The only ATT (i.e. RM-820) I've been able to load back onto my phone after loading a rogers ROM is the ATT Dev Rom.
http://forum.xda-developers.com/showthread.php?t=2425722
that's a little more involved than what I did, but I can confirm I have the ATT Dev ROM, and was not able to load standard 820 roms
Any other thoughts?
I'd like to know if anyone has experience going to 821 to 820 on an unbranded phone.