I have successfully installed the AT&T Amber Developer rom to a brand new Locked Black AT&T branded phone just delivered this morning from AT&T. I had to go with AT&T to make sure that I got model rm-820 to ensure complete compatibility with 4G/Edge. The phone is locked, but I'm waiting for an email from AT&T to unlock it.
Here's how I got it done, just took some time and a lot of patience. As a bonus, I also got internet sharing working, without calling 611 and having tethering turned on, here in the NE USA, on AT&T's network.
Please remember that this is for a BLACK phone. Adjust for different colors if possible.
Download and install the latest version of NCS.
Download Navifirm+ v2.3 here: http://www.symbian-toys.com/navifirm.aspx. No need to install, just run it when you need it to download the rom.
I only downloaded two roms:
Rom 1
The first one was the pre-portico Rogers rom. I downloaded the needed files from here: http://wp.it168.com/thread-217624-1-1.html
Download the files under this heading "059Q6W4: RM-820_Rogers_Canada_VAR240202_v2_Black" by right clicking each one and saving to C:\Program Data\Nokia\Packages\Products\rm-820. Remove the check-sum numbers from the front of each file name when the downloads are complete.
Rom 2
Use Navifirm, or any of the other means, to download rom 059R2L5 RM-820 AT&T DEVELOPER DEVICE BLK. Copy the downloaded files to C:\Program Data\Nokia\Packages\Products\rm-821.
Flashing the roms
Start NCS and open product rm-820. Select Rom code 059Q6W4 RM-820_Rogers_Cana... Version 1232.2109.1242.1002. That should be the only one there. Click the start button to flash the rom to the phone. Ignore the warning about it not being the correct rom.
When flashing is complete, setup the phone just enough to get to the settings. Connect to your WIFI. In settings, go to Phone Update and click on Check for Updates. Keep tapping on the phone to keep it awake though out this procedure. The phone will take forever to find, download and install the first update. When completed and the phone is reset and on, set WIFI and check for updates again. Follow the same procedure until you are told that there are no more updates. I believe that it was 3 updates, maybe 4. Be sure that your WIFI is enabled each time to prevent failure of an update.
Go to NCS and open product rm-821. Select Rom code 059R2L5 RM-820 AT&T DEVELOPER DEV... Version 3047.0000.1326.20... That should be the only one there. Click the start button to flash the rom to the phone. Ignore the warning about it not being the correct rom.
Enable internet sharing
When the installation is complete, setup the basics of the phone. Enable WIFI. Go to Setting/Access Point and select AT&T - LTE 2 - Lumia.
Go to Settings/Keyboard. I kept the English keyboard and removed the French keyboard. Click on add keyboards and select Spanish (Spain).
Turn off your phone. Turn on your phone and go to Settings/Phone Updates and check for updates. Once the Spanish keyboard is installed, turn off the phone and then turn it back on. No need to do a reset.
When the phone is back on and up fully, go to Settings/Internet Sharing and turn it on. You'll see a screen stating "Sharing your cellular data connection over WIFI... a Broadcast name and password lines. Already had two tablets going thru it as a test. Worked great. Also, go to Settings/Speech and select the language you want spoken to you.
Hope this helps everyone out. I didn't include how to use NCS, feel free to add that if someone wants to.
PS The AT&T rom failure mismatch platform message, which has kept everyone from installing AT&T dev rom, or even own AT&T's rom, onto AT&T branded phones is misleading. What is being checked is the first section of the VERSION NUMBER. AT&T update needs to see at least version 3047.0000... (Amber) of the Rogers_Canada rom on the phone you're flashing the rom to in order to be successful. AT&T also checks a kernal version, which is the same for AT&T and Rogers roms.
By installing 059Q6W4 RM-820_Rogers_Cana... Version 1232.2109.1242.1002, which is the only rom that will flash onto an AT&T branded phone, and updating, you're bring the phone version up to 3047.0000.... and now 059R2L5 RM-820 AT&T DEVELOPER DEV... Version 3047.0000.1326.20... will install successfully.
The phone is now working fully, without any issues that I've been able to uncover yet.
I welcome any and all comments.
Added observations:
To avoid connectivity issues flashing, be sure to use a 2.0 USB port, directly to your computer, NOT thru a USB hub. If you plug into some 3.0 USB ports or a USB hub (powered or not), NCS will see and read the phone, but will fail at flashing.
All files for a rom need to be kept in their separate directories for clean flashing! Best practice is to download the files to a directory named after the rom you're downloading. Rename the directory of the rom you want to burn to your model (rm-820 or rm-821) before starting NCS. I believe Navifirm+ v2.3 already handles downloads this way. Failure to do this can result in a goofy acting phone, missing/not working right features and other possible issues.
But can you go back to the stock at&t retail rom ?
Sent from my Xperia Tablet Z
Why would you want to???
Spectre51 said:
But can you go back to the stock at&t retail rom ?
Sent from my Xperia Tablet Z
Click to expand...
Click to collapse
Sure! After flashing rom 059Q6W4 RM-820_Rogers_Cana... Version 1232.2109.1242.1002, do NOT perform any updates.
Download rom 059L848 RM-820 NDT AMERICA ATT Black and flash to the phone. This will install the current AT&T stock rom, Version 1232.5692.1314.0001, loaded with AT&T branded pay-for bloatware.
Now I have to ask, WHY would you want to run the branded, outdated firmware that is loaded with AT&T's pay-for bloatware, AND removes useful utilities that can help you potentially save money on AT&T's network? (Unless you're returning the phone to AT&T and you don't want them to know that you screwed with it.).
My wife has had her AT&T branded red 920 for about a week now, with the stock Version 1232... AT&T rom. I gave her my phone (AT&T branded black 920) that I've flashed to the Amber (Version 3042...) update, using the AT&T developers rom, to compare it to her phone. She played with the phone for about 1/2 an hour.
She said that she felt that the phone seemed to responded snapper under certain conditions, music in background, facebook running, and a game paused. She also liked having access to Data Sense. We have a shared 4 Gig plan and who ever goes over will have to come up with the extra cash, so she liked being able to view her usage in real time. She also really liked the Setting/Display and touch, which lets you double tap the screen to wakeup and displays the time while off. Also, having Setting/Internet sharing enabled (With Spanish (Spain) keyboard installed.), was a big hit with her. She'll be able to connect and use her WIFI table while on the road.
Needless to say, now she wants the Developers rom on her phone.
Nice. Thank you but I do have another question for the At&T Dev Rom. Do you know the code for Cyan AT&T color or should I use the black Dev Rom?
Thanks
randy_c said:
Nice. Thank you but I do have another question for the At&T Dev Rom. Do you know the code for Cyan AT&T color or should I use the black Dev Rom?
Thanks
Click to expand...
Click to collapse
I have only seen the AT&T developers rom for Black. I believe the only difference is what default color the tiles are (matches phone color) and what color the phone reports when plugged in.
I always want the ability yo go back to stock no matter what. Just a safety net for me I guess. Have you tested that method to go back to stock successfully? Just ask because it doesn't seem anyone else had found a successful method.
Sent from my Sony Xperia Z
Spectre51 said:
I always want the ability yo go back to stock no matter what. Just a safety net for me I guess. Have you tested that method to go back to stock successfully? Just ask because it doesn't seem anyone else had found a successful method.
Sent from my Sony Xperia Z
Click to expand...
Click to collapse
Yes, you can, using the procedure explained in my last reply. And, yes, I was able to reload the stock (UGH) rom.
Sure! After flashing rom 059Q6W4 RM-820_Rogers_Cana... Version 1232.2109.1242.1002, do NOT perform any updates.
Download rom 059L848 RM-820 NDT AMERICA ATT Black and flash to the phone. This will install the current AT&T stock rom, Version 1232.5692.1314.0001, loaded with AT&T branded pay-for bloatware.
I wonder why so many having problem going back to AT&T stock ROM
randy_c said:
Sure! After flashing rom 059Q6W4 RM-820_Rogers_Cana... Version 1232.2109.1242.1002, do NOT perform any updates.
Download rom 059L848 RM-820 NDT AMERICA ATT Black and flash to the phone. This will install the current AT&T stock rom, Version 1232.5692.1314.0001, loaded with AT&T branded pay-for bloatware.
I wonder why so many having problem going back to AT&T stock ROM
Click to expand...
Click to collapse
After installing Rogers Version 1232, even one update will prevent reloading stock AT&T rom. If you don't flash the stock rom immediately, you risk having the phone being updated automatically.
I think this thread would get more input in the 920 windows phone development section..
Yes the OP says its possible to go back to the ATT stock rom. They say not to let the phone update once on the Rogers preportico rom. From there, flash back to the ATT rom. It's supposed to work every time.
da1stprince said:
I think this thread would get more input in the 920 windows phone development section..
Click to expand...
Click to collapse
I believe that would be up to a moderator to make that decision and implement the change.
Returning to Stock
Once you have flashed the AT&T Developer ROM, is it possible to flash back to the Rogers Pre-Portico ROM to return to AT&T Stock?
Has anyone tested this?
JobuJones said:
Once you have flashed the AT&T Developer ROM, is it possible to flash back to the Rogers Pre-Portico ROM to return to AT&T Stock?
Has anyone tested this?
Click to expand...
Click to collapse
as explained in the posts above the answer is yes. You can go back to pre-portico Rogers and without running any OTA updates on the pre-portico Rogers (any updates will prevent you to flash to stock ATT) you can go back to stock ATT rom.
derausgewanderte said:
as explained in the posts above the answer is yes. You can go back to pre-portico Rogers and without running any OTA updates on the pre-portico Rogers (any updates will prevent you to flash to stock ATT) you can go back to stock ATT rom.
Click to expand...
Click to collapse
Thanks! I just wanted to verify that this works! :good:
When attempting to use NCS, I get the error, "Data package selection failed. Access is denied. Verify credentials."
I'm using 5.0.0 (2013.1.3) and I've moved the .cfg file to the appropriate location. Any ideas?
UPDATE - My problem was resolved by following the flashing procedure in this thread
I'm now running the AT&T GDR2 & Amber update - Thanks!
derausgewanderte said:
as explained in the posts above the answer is yes. You can go back to pre-portico Rogers and without running any OTA updates on the pre-portico Rogers (any updates will prevent you to flash to stock ATT) you can go back to stock ATT rom.
Click to expand...
Click to collapse
I don't think this is accurate info, please correct me if I'm wrong but don't you need to do OTA updates while in the pre portico rom in order to flash up to amber rom? I just successfully flashed a Rogers pre portico rom onto my att L920 and flashed back to my original stock rom because for some reason I couldn't flash the att amber dev rom (ID invalid errors) and the only reason I could think of as to why it wouldn't flash for me is because of a lack of OTA updates while in the rogers pre portico rom..
da1stprince said:
I don't think this is accurate info, please correct me if I'm wrong but don't you need to do OTA updates while in the pre portico rom in order to flash up to amber rom? I just successfully flashed a Rogers pre portico rom onto my att L920 and flashed back to my original stock rom because for some reason I couldn't flash the att amber dev rom (ID invalid errors) and the only reason I could think of as to why it wouldn't flash for me is because of a lack of OTA updates while in the rogers pre portico rom..
Click to expand...
Click to collapse
My post was referring to go back to ATT stock rom once you have been to some Amber rom. You can only go back to stock ATT if you reflash with pre-portico Rogers and not have it do OTA. Once you get an OTA you cannot go back to stock ATT. You basically confirmed this. To go to Amber you have to do OTA on the pre portico Rogers.
derausgewanderte said:
My post was referring to go back to ATT stock rom once you have been to some Amber rom. You can only go back to stock ATT if you reflash with pre-portico Rogers and not have it do OTA. Once you get an OTA you cannot go back to stock ATT. You basically confirmed this. To go to Amber you have to do OTA on the pre portico Rogers.
Click to expand...
Click to collapse
thanks for the confirmation, guess if I had to send this unit in for repair/replacement, I can flash the at&t dev rom and not have to worry about voiding any warranty
I tried going back to the pre portico rom and all I get is an error 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. I can flash to a french rom I found on wpc and the att dev rom but the not the pro portico rom. Can anyone help me out?
Hello,
I recently bought a GS3 and since it's "carrier blocked" as its not recieving any further updates since my carrier is not willing to pay for new firmwares, I was wondering if, when I flash a new official firmware with ODIN, such as in my case DBT (Germany's one)...do I have to do anything special after or before flashing, or is it just safe to go and fash the firmware?
Thanks
No, it will just become an unbranded phone if you flash the latest stock rom for your country, or branded with another carrier if you choose their firmware.
What it won't do is unlock the old carrier SIM lock, so you'll still have to use their network.
Follow the sticky guides on using odin, backup your efs and you'll be fine.
Edit: you might need to factory reset before you flash, depending on how old your current firmware is.
Carrier blocked ??? Do you mean the phone and its IMEI has been blocked by the carrier ??
I'm really sorry if the means of doing this has been posted but I have looked and I cannot find it. I would assume that I am not the only person who would want to do this, so if someone can either point me in the way of a definitive guide or tell me it simply isn't possible then I'm grateful for your help.
Here's what I know:
I can easily flash my Three UK (H3G) LG G5 to the open EU version of Nougat via Uppercut/LGUP
I can easily flash it to the EE version of Nougat for the UK
I can easily flash it back to the H3G version of Marshmallow
In the first two cases I get an error on boot which is related to the cust folder being set to H3G specifically. The only way to get the device to boot without these errors is to flash back to the Three firmware. There is no nougat firmware from Three for the G5 yet because they are utterly rubbish.
My question is, *is there a way to flash the open EU ROM, wipe or convert the cust folder by unlocking the BL and rooting, un-root, flash the normal recovery back on and re-lock the boot loader and basically convert my G5 into an Open EU model with OTA updates and no evidence that I have ever tampered with the device at all?*
Or do I have to accept that in buying a Three branded device it will always be hobbled in some way?
I've always found it incredibly easy to flash Samsung devices with ODIN so this level of PITA-ery is all new to me!
Thanks in advance everyone, and sorry once again if a guide for this has been posted, but I genuinely cannot find a guide specifically detailing the solution to my request.
On a side note, if I flash the Open EU KDZ (confession, I have), will I still get OTA up dates - for example, to 20C - once they arrive, or does the cust folder error on boot signal some borkery that will disable OTA updates from working?
Thanks again everyone
Also apologies but this should probably be in Q&A. Genuine user error!
Just find a European Nougat kdz flash it thro lgup and hey presto ....nougat on the G5 I've been running v20x ever since it was available.
I already did that, but I get an error everytime I reboot because even though I've flashed the KDZ for the open EU ROM the cust folder is still set to Three UK I believe. Was your device network branded?
leoni1980 said:
I already did that, but I get an error everytime I reboot because even though I've flashed the KDZ for the open EU ROM the cust folder is still set to Three UK I believe. Was your device network branded?
Click to expand...
Click to collapse
May be you have to flash boot logo. I have never checked flashing boot logo like I did with Nexus phones.
Sent from my LG-H850 using Tapatalk
There is no Three splash screen on my device - it is just running the stock splash screen now. The only issue I have is that I get the errors on boot relating to the CUST folder.
Hi,
I have an LG V30+, H930DS. I managed to flash with LGUP another firmware, but it does not show me the region of the firmware, only V20f-GLOBAL-COM. After 2 weeks, I wanted to come back to stock firmware. Ok - I used the IMEI and found out that the version I need is H930DS20f_00_OPEN_SG_DS_OP_0425.kdz. Downloaded from lg-firmware and after I flashed (with UPGRADE), I get H93022n-GLOBAL-COM ... Before the first flash it was V20f-SEA-XX. Now, whatever firmware I flash to it, it shows always whatever-GLOBAL-COM ...
In LGUP the device is found as H93022n ... Must I use REFURBISHED ?
Any ideea why it does not show the firmware region ?
Using TWRP, the service tech guy at a shopping mall near my place changed my phone (on one UI, pie) from KT variant to global firmware. Now, there is no OTA menu and i cannot connect to my 5.8GHz wifi router. While the 1st SIM IMEI showing OK, the 2nd SIM IMEI is showing all 0 values. Now what i'm wondering about-
1. can i download the official firmware for F variant and using ODIN can i reflash it to bone stock?
2. will i get OTA then?
3. all in all, what i want to know- is it possible to complete convert a 965N to 965F ( i don't need dual sim feature actually)
rizwan312 said:
Using TWRP, the service tech guy at a shopping mall near my place changed my phone (on one UI, pie) from KT variant to global firmware. Now, there is no OTA menu and i cannot connect to my 5.8GHz wifi router. While the 1st SIM IMEI showing OK, the 2nd SIM IMEI is showing all 0 values. Now what i'm wondering about-
1. can i download the official firmware for F variant and using ODIN can i reflash it to bone stock?
2. will i get OTA then?
3. all in all, what i want to know- is it possible to complete convert a 965N to 965F ( i don't need dual sim feature actually)
Click to expand...
Click to collapse
if its running a F based firmware right now, then you should be able to flash the factory F firmware on it with a computer at home. no need for a dude in a shop. anyways, the no update thing is likely caused by a flash that wasnt 100% successful.
go get the firmware for whatever country youre using the phone in from here https://www.sammobile.com/samsung/galaxy-s9-plus/firmware/SM-G965F/ and flash it with the CSC not the HOME_CSC so that itll factory reset and likely fix the issue
i have tried that but something, somehow it didn't work. By the way, do you know if S9+ is able to connect to 5.8Ghz wifi signal? I only see 2.4Ghz signals.
I heard that using any custom rom won't allow you to see the OTA update menu.
when i tried ODIN, as you have mentioned, i saw re-partition fail error, connection delay timeouts etc. I am in Bangladesh and i had downloaded the latest global 965F file for Bangladesh using sammobile. It didn't work.
Hi,
Can my Samsung G965N support G965F Firmware?
Thanks for helping.