I flashed a N7100 custom rom onto an N7105

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mix1987

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Jun 2, 2011
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I tried root, cwm, triangle and custom rom for N7100 on my N7105. All works except for custom N7100 rom. Custom rom from N7100 if installed onto an N7105 will mess with the modem (no phone, message, data transfers but wifi still works). But flashing back N7105 modem unto a N7100 custom rom installed on an N7105 does not bring back use of modem. You need to flash a N7105 stock rom from your country to bring back the use of modem. So that kinda bring us back to square one...

The similiarities are surprisingly many. All functions are intact except for modem. All we need to do is to figure out what modules in a N7105 stock rom needs to be transplanted unto a N7105 installed with a N7100 to make the modem come back.

At first, I created a nandriod backup straight away after root. After creating the nandriod backup, I proceeded to flash a N7100 rom unto a N7105. Modems gone. After that I flashed back the nandriod backup, but modem does not come on. As nandriod backup does not backup the modem, I thought that if I simply flashed the modem extracted from stock N7105 rom onto my N7105 installed with N7100 custom rom I will regain the use of my modem. I was wrong. Modem functionality still remained elusive.

The similiarities between N7100 and N7105 are surprisingly many. All functions are intact except for modem if u flashed N7100 rom unto N7105. All we need to do is to figure out what modules in a N7105 stock rom needs to be transplanted unto a N7105 installed with a N7100 rom to make the modem come back.

The aim of this thread is to port modem capabilities onto an N7105 so that we can do this for all roms in XDA, assuming that developers did not mess with N7100 modems. We will effectively take a N7100 custom rom and flash it on an N7105 with a few steps added to regain modem functionality. This way is much better than a segregated support for both Galaxy Note 2 types. Either this or developers can create roms with dual support for N7105 and N7100. But my way is a more proactive approach on the part of users.

Sent from my GT-N7105 using xda premium
 
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-viperboy-

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Likely that ROM flashed a modem with the ROM. Was it ARHD by chance? I know they flash a modem on install which I never understood and, IMO, makes no sense.

Sent from my EVO using Tapatalk 2
 
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mix1987

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Jun 2, 2011
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Likely that ROM flashed a modem with the ROM. Was it ARHD by chance? I know they flash a modem on install which I never understood and, IMO, makes no sense.

Sent from my EVO using Tapatalk 2

Yes modems were flashed. I try to be as non invasive as possible to developers. I understood from my time is XDA developers that if you seriously want something, DIY. Haha.
 

-viperboy-

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Yes modems were flashed. I try to be as non invasive as possible to developers. I understood from my time is XDA developers that if you seriously want something, DIY. Haha.

That's what general or q&a is for lol flash your modem for your device and that should fix it. Maybe post a suggestion in that ROM thread to remove the modem flash. Again, its quite unnecessary. Coming from developing on HTC stuff, we couldn't even flash the radio stuff from recovery. Even if we could, we wouldnt :) too much that could go wrong if you get a bad flash or a corrupted zip.

Sent from my EVO using Tapatalk 2
 
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flywithme

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Dec 16, 2008
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So what must be done to gain phone signals back if one installs a N7100 custom rom into a N7105? If the problem is with the chipset there is nothing much we can do about it right?

Sent from my GT-N7105 using xda premium

I did the same mistake as you did.
Don't panic though.

I downloaded a stock N7105XXALIJ rom and flash it using PC odin.
Everything is back to normal. 3G, 4G, LTE, sms, mms, data all working.

Then I rooted it using this guide:
http://forums.hardwarezone.com.sg/s...-rom-flashing-tutorial-r-d-stage-3942841.html

Everything is perfect so far.
 
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mix1987

Senior Member
Jun 2, 2011
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I did the same mistake as you did.
Don't panic though.

I downloaded a stock N7105XXALIJ rom and flash it using PC odin.
Everything is back to normal. 3G, 4G, LTE, sms, mms, data all working.

Then I rooted it using this guide:
http://forums.hardwarezone.com.sg/s...-rom-flashing-tutorial-r-d-stage-3942841.html

Everything is perfect so far.

No flashing N7100 was a deliberate endeavour for me. I wanted to see what screws up after flashing. The aim of this thread is to see what can us normal users do to regain modem control in an N7100 rom.

After some though I realised that it is not very feasible. As some files needs to be altered as they contain N7100 only information like build.prop. We might just need to wait for a knight in shining armour to create a N7105 rom for us....

Sent from my GT-N7105 using xda premium
 

-viperboy-

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No flashing N7100 was a deliberate endeavour for me. I wanted to see what screws up after flashing. The aim of this thread is to see what can us normal users do to regain modem control in an N7100 rom.

After some though I realised that it is not very feasible. As some files needs to be altered as they contain N7100 only information like build.prop. We might just need to wait for a knight in shining armour to create a N7105 rom for us....

Sent from my GT-N7105 using xda premium

What would probably make more sense is one of two things... 1) a "flash pack" that allows you to flash an n7100 Rom, then you flash the flash pack to put back device specific files or 2) ROM devs can build an updater-script that identifies your device and basically does that for you. So it would flash all the files that are the same, determine your device, flash device specific files. I wouldn't mind helping build you guys a flash pack, I just need to look into what files are different.

Sent from my EVO using Tapatalk 2
 

mix1987

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Jun 2, 2011
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What would probably make more sense is one of two things... 1) a "flash pack" that allows you to flash an n7100 Rom, then you flash the flash pack to put back device specific files or 2) ROM devs can build an updater-script that identifies your device and basically does that for you. So it would flash all the files that are the same, determine your device, flash device specific files. I wouldn't mind helping build you guys a flash pack, I just need to look into what files are different.

Sent from my EVO using Tapatalk 2


I assume its a long a tiring process? I'd love to help, just tell me what to do!


Sent from my GT-N7105 using xda premium
 

turilo

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Jun 17, 2007
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I guess it would fail. I would be surprised to see it work. Flashing a N7100 modem completely killed phone signal if flash unto an N7105.

Sent from my GT-N7105 using xda premium

Hmm you might be right, but I'm a stubborn fool I'd test it if I can get my hands on the N7105 modem :D

Sent from my GT-N7100 using Tapatalk 2
 

-viperboy-

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I assume its a long a tiring process? I'd love to help, just tell me what to do!


Sent from my GT-N7105 using xda premium


Not too bad, but I would have to diff the 7100 ROM to a 7105 ROM. I'm much more familiar with HTC, time to relearn the Samsung stuff lol



im curios tosee what would happen flashing the n7105 modem on the n7100

If you have the file, you can definitely flash it. But expect things not to work.

Sent from my EVO using Tapatalk 2
 
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-viperboy-

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If we can make this work, the while N7105 community is indebted to you!


Sent from my GT-N7105 using xda premium

My internet is crappy at home but really quick at school. When I get back tonight, I will look at 2 stock .tar's of the n7100 and n7105 and diff them to see what is different and see what I can come up with :)

Sent from my EVO using Tapatalk 2
 

sewe

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Jul 20, 2010
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My internet is crappy at home but really quick at school. When I get back tonight, I will look at 2 stock .tar's of the n7100 and n7105 and diff them to see what is different and see what I can come up with :)

Sent from my EVO using Tapatalk 2
Awesome, looking forward to hear what you find
 

-viperboy-

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Jesus, every damn link is a hotfile link! Anyone have a premium account I could use to download these files?? Or alternate links for N7100 and N7105 .tar's? Thanks!
 
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-viperboy-

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Haha. I am sorry bro. This is something I can't help you with!

Sent from my GT-N7105 using xda premium

Bleh. Well, I'm heading back to school now, gonna take me about 3 hours. If someone has fast internet, would be nice if they could download a stock N7100 tar and a stock N7105 tar and host them on dev-host, androidfilehost, or goo.im. Some place where I can actually download the damn thing. Would make things easier for me to look at when I get to school, instead of 2+ hr download times on a file I should be able to pull down in 3-5 mins.
 
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-viperboy-

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It's still downloading... I'm going to have to look at this after class tomorrow. Will keep you guys informed :)
 

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  • 7

    I will try to work with my tester tonight if I can. I do have the device now, so I can test a few more things than before.
    6
    We just got the the stock tar for my device yesterday. Now I can go back to stock, which was an issue before. I will try to flash ARHD later on my phone and see what needs fixed from there. Maybe it will apply to your phones :) if not, I can't promise anything, but maybe I will try to make a custom ROM for you guys once I finish my ROM.

    Sent from my SPH-L900 using Tapatalk 2
    5
    I tried root, cwm, triangle and custom rom for N7100 on my N7105. All works except for custom N7100 rom. Custom rom from N7100 if installed onto an N7105 will mess with the modem (no phone, message, data transfers but wifi still works). But flashing back N7105 modem unto a N7100 custom rom installed on an N7105 does not bring back use of modem. You need to flash a N7105 stock rom from your country to bring back the use of modem. So that kinda bring us back to square one...

    The similiarities are surprisingly many. All functions are intact except for modem. All we need to do is to figure out what modules in a N7105 stock rom needs to be transplanted unto a N7105 installed with a N7100 to make the modem come back.

    At first, I created a nandriod backup straight away after root. After creating the nandriod backup, I proceeded to flash a N7100 rom unto a N7105. Modems gone. After that I flashed back the nandriod backup, but modem does not come on. As nandriod backup does not backup the modem, I thought that if I simply flashed the modem extracted from stock N7105 rom onto my N7105 installed with N7100 custom rom I will regain the use of my modem. I was wrong. Modem functionality still remained elusive.

    The similiarities between N7100 and N7105 are surprisingly many. All functions are intact except for modem if u flashed N7100 rom unto N7105. All we need to do is to figure out what modules in a N7105 stock rom needs to be transplanted unto a N7105 installed with a N7100 rom to make the modem come back.

    The aim of this thread is to port modem capabilities onto an N7105 so that we can do this for all roms in XDA, assuming that developers did not mess with N7100 modems. We will effectively take a N7100 custom rom and flash it on an N7105 with a few steps added to regain modem functionality. This way is much better than a segregated support for both Galaxy Note 2 types. Either this or developers can create roms with dual support for N7105 and N7100. But my way is a more proactive approach on the part of users.

    Sent from my GT-N7105 using xda premium
    5
    As a heads up for everyone, what is posted doesn't appear like it will work right now. This is a little bit more complicated than I thought. I do have an N7105 tester though, it's faster to work with him than post stuff here and wait for results. When I have more progress for you guys, I will let you know. Just taking me a little big longer than I thought.
    5
    Ok guys, should be good now. I pulled all the files out of it and flashed on my HTC. Got the status 6 error. Fixed some stuff in the updater-script, reflashed, said successful. So this one should work for you! Please give it a shot!

    https://dl.dropbox.com/u/6621763/n7100_to_n7105_flash_pack_3.zip

    The only issue I could see at this point is that this flash pack will replace the boot.img, so init.d scripts won't work because it's a stock kernel with no busybox run-parts included. Once we get this sorted out and verify it working, we will address the small details such as that. I just want to see a post of a successful flash from an N7100 ROM! I'm about to head to bed here, so if I don't respond, I will talk to you guys in about 6 hours.