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[FLASH] How to use NCS to change from RM-820 to RM-821 and vice versa

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By halabibk, Senior Member on 22nd January 2013, 07:22 PM
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Band Issue was fixed with the latest update....

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I investigate more about it and the problem is only in VODAFONE DE hardware so far, so I can say is safe to do ---> Do not change from 821 to 820 your bands will get screw, always will show the LTE bands for the 820, even if you flash back to 821 pre-portico and portico. Now my phone is not working properly, every time I go in network search the phone reboot...any help from anyone will be appreciated?
****************************


I am going to explain in an easy way, assuming you have some basic knowledge to flash any other produces like 820 to another 820 or from 821 to another 821:

Case 1: Nokia Lumia 820 or Roger Product RM-820 to International Version RM-821

a. Do not connect the phone.
b. Download the FW that you like.
c. Create the folder in ….\Products\RM-820
d. Copy the files for the RM-821 FW that you previous download in that folder.
e. Open NCS, open product, select RM-820 and it will highlight the FW that you put in that folder.
f. Press start, the NCS will validate the FW and explain to press volume down + power and retry key to proceed to flash.
g. At this time with the phone off, press volume down + power and as soon the phone vibrate, connect to usb and press retry.
h. That is it. Your phone from RM-820 will be recognizing as RM-821.

Note: The original product code will always remain.

Case 2: Nokia Lumia International Version RM-821 to 820 or Roger Product RM-820 or any product converted before as RM-821

a. Do not connect the phone.
b. Download the FW that you like.
c. Create the folder in ….\Products\RM-821
d. Copy the files for the RM-820 FW that you previous download in that folder.
e. Open NCS, open product, select RM-821 and it will highlight the FW that you put in that folder.
f. Press start, the NCS will validate the FW and explain to press volume down + power and retry key to proceed to flash.
g. At this time with the phone off, press volume down + power and as soon the phone vibrate, connect to usb and press retry.
h. That is it. Your phone from RM-821 will be recognizing as RM-821.

Note: The original product code will always remain.

I hope that clarify how to do it and help others to enjoying flashing. A thanks click will be appreciated and I am not responsible for any damage caused by this procedure to any of you.

************************************************** ************************************************** ************************************************** ******************************************
I try again from DEV 821 to 820 ATT fail. From DEV 821 to 820 Roger Working. From 820 Roger to 820 ATT Fail. I old version and Portico to go to ATT fail.

************************************************** ************************************************** ************************************************** ******************************************
For some reason there is no way to change a RM-820 ATT and RM-822 to RM-821. Everything else RM-820 can go RM-821 and vice versa.
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22nd January 2013, 10:12 PM |#2  
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Thanks for this tutorial...

I'd like to ask you something maybe you (or someone) know the answer for...

I have an unlocked Rogers 920 which I am not using on Rogers, but on an AWS carrier. It works fine mostly, but if I flash/reflash, I cannot restore any backup, since I cannot get data working until I set up the network access point app that someone found hiding in the store a while ago. But I cannot download it until I get connected to wi-fi, and I cannot connect until the phone is fully set up, at which point, I can no longer restore a backup... (thanks to MS for this, I guess)...

At this point, I have a few apps installed, some were even downloaded on special days that were free, so if I flash the standard way, I will lose them and will have to install them again...

Do you know (or can you guess) if once the DEV ROM is installed the phone does allow to connect to data without having to install the access point add-on from the Store? That way, I would be able to restore my backup...

Any input will be greatly appreciated.

--
Abel
23rd January 2013, 10:16 PM |#3  
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Hello,

Thanks for posting the tutorial. Do you have any information on how this may affect future OTA updates once NCS is shut down?
23rd January 2013, 10:21 PM |#4  
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Not really known 100% at this point. When I flashed my ATT 920 to Rogers pre-portico rom, it let me do the OTA upgrade to the rogers portico rom. Not sure if this will still work if you change an RM-820 into an RM-821 but it seems like it will.
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24th January 2013, 05:19 AM |#5  
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What exactly do I gain from installing an international version RM-821 onto my Rogers RM-820? To my understanding it would unbrand it (boot screen, pre-installed applications) and get tethering to work. Can anyone else confirm that? Anything else?
Also, you mention "Download the FW that you like.", where can we find firmware and how will we know that its compatible?
24th January 2013, 01:02 PM |#6  
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Quote:
Originally Posted by studystand

What exactly do I gain from installing an international version RM-821 onto my Rogers RM-820? To my understanding it would unbrand it (boot screen, pre-installed applications) and get tethering to work. Can anyone else confirm that? Anything else?
Also, you mention "Download the FW that you like.", where can we find firmware and how will we know that its compatible?

What exactly do I gain? Just fun installing other FW for diferents countries.
Can anyone else confirm that? You did mention.
Download the FW that you like? NaviFirm+ 1.7
how will we know that its compatible? 820 / 821 / 822 all are compatible.
24th January 2013, 03:36 PM |#7  
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Quote:
Originally Posted by studystand

What exactly do I gain from installing an international version RM-821 onto my Rogers RM-820? To my understanding it would unbrand it (boot screen, pre-installed applications) and get tethering to work. Can anyone else confirm that? Anything else?
Also, you mention "Download the FW that you like.", where can we find firmware and how will we know that its compatible?

The major thing is that if you have lost your AWS band, flashing the RM-821 euro dev rom will enable it again. It will also get rid of the boot logo and all preinstalled apps.
24th January 2013, 03:59 PM |#8  
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Quote:
Originally Posted by halabibk

I am going to explain in an easy way, assuming you have some basic knowledge to flash any other produces like 820 to another 820 or from 821 to another 821:

Case 1: Nokia Lumia ATT or Roger Product RM-820 to International Version RM-821

a. Do not connect the phone.
b. Download the FW that you like.
c. Create the folder in ….\Products\RM-820
d. Copy the files for the RM-821 FW that you previous download in that folder.
e. Open NCS, open product, select RM-820 and it will highlight the FW that you put in that folder.
f. Press start, the NCS will validate the FW and explain to press volume down + power and retry key to proceed to flash.
g. At this time with the phone off, press volume down + power and as soon the phone vibrate, connect to usb and press retry.
h. That is it. Your phone from RM-820 will be recognizing as RM-821.

Note: The original product code will always remain.

Case 2: Nokia Lumia International Version RM-821 to ATT or Roger Product RM-820 or any product converted before as RM-821

a. Do not connect the phone.
b. Download the FW that you like.
c. Create the folder in ….\Products\RM-821
d. Copy the files for the RM-820 FW that you previous download in that folder.
e. Open NCS, open product, select RM-821 and it will highlight the FW that you put in that folder.
f. Press start, the NCS will validate the FW and explain to press volume down + power and retry key to proceed to flash.
g. At this time with the phone off, press volume down + power and as soon the phone vibrate, connect to usb and press retry.
h. That is it. Your phone from RM-821 will be recognizing as RM-821.

Note: The original product code will always remain.

I hope that clarify how to do it and help others to enjoying flashing. A thanks click will be appreciated and I am not responsible for any damage caused by this procedure to any of you.

This doesn't work. trying to flash 820 to 821 and receiving:
Invalid response from device, incorrect message id
24th January 2013, 05:06 PM |#9  
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Quote:
Originally Posted by RikP

This doesn't work. trying to flash 820 to 821 and receiving:
Invalid response from device, incorrect message id

i`m getting the same message , can`t flash my att lumia
24th January 2013, 07:09 PM |#10  
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Tethering
Does anybody know if this will enable Tethering on ATT Lumina 920?
24th January 2013, 10:23 PM |#11  
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Quote:
Originally Posted by RikP

This doesn't work. trying to flash 820 to 821 and receiving:
Invalid response from device, incorrect message id

I test in every ways and I can flash from 821 to 820 to any FW without no problem and vice verse, you must be doing something wrong. Try to install the latest NCS 2013, this what i used.
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