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[Q] New N900 has bad signal and "your device has been modified" update error

[Q] New N900 has bad signal and "your device has been modified" update error
Hello forum,
I am in the UK using a Virgin sim and my girlfriend bought this phone new in china and flew it over to me. At the moment the signal is really bad wherever I go (the same SIM card in my old galaxy nexus had great signal in all these places) so I was wondering if there was any way to make the signal better?
Also I tried to do an update through the settings menu hoping this would sort out the signal problem and it is giving me the "your device has been modified. no updates available for this device." error even though the phone is new.
the information about the device is as follows:
when I type *#1234# I get:
AP: N900ZSUBMI5
CP:N900XXUBMI2
CSC:N900OZSBMI2
In my "about device" within settings, the following is given:
Model number: SM-N900
Android version: 4.3
Baseband version: N900XXUBMI2
Kernel version: 3.4.39-1625296
[email protected]#1
Wed Sep 11 19:49:31 KST 2013
Build number: JSS15J.N900ZSUBMI5
SELinux status: Enforcing
If I reboot to recover it opens:
CWM-based Recovery v6.0.4.5
Compiled by Xiaolu(20131121)
When I try to check knox I cant see it (I go into odin mode and the top left just says the following):
CURRENT BINARY: Custom
SYSTEM STATUS: Custom
(I now understand the N900 doesn't have knox)
Thanks for looking, any feedback at all would be much appreciated :good:

Saml91 said:
Hello forum,
I am in the UK using a Virgin sim and my girlfriend bought this phone new in china and flew it over to me. At the moment the signal is really bad wherever I go (the same SIM card in my old galaxy nexus had great signal in all these places) so I was wondering if there was any way to make the signal better?
Also I tried to do an update through the settings menu hoping this would sort out the signal problem and it is giving me the "your device has been modified. no updates available for this device." error even though the phone is new.
the information about the device is as follows:
when I type *#1234# I get:
AP: N900ZSUBMI5
CP:N900XXUBMI2
CSC:N900OZSBMI2
In my "about device" within settings, the following is given:
Model number: SM-N900
Android version: 4.3
Baseband version: N900XXUBMI2
Kernel version: 3.4.39-1625296
[email protected]#1
Wed Sep 11 19:49:31 KST 2013
Build number: JSS15J.N900ZSUBMI5
SELinux status: Enforcing
If I reboot to recover it opens:
CWM-based Recovery v6.0.4.5
Compiled by Xiaolu(20131121)
When I try to check knox I cant see it (I go into odin mode and the top left just says the following):
CURRENT BINARY: Custom
SYSTEM STATUS: Custom
(I now understand the N900 doesn't have knox)
Thanks for looking, any feedback at all would be much appreciated :good:
Click to expand...
Click to collapse
Well it looks great. At least I can be sure that your phone shouldn't be a fake. It is of Hong Kong or Taiwan origin, Exynos, running 4.3 on N900ZSUBMI5.
You have CWM Recovery, Xiaolu's port of it. Hence that device was probably rooted prior to getting it handed over to your girlfriend. KNOX is only present on the MJ and onward firmwares, and you happen to be on an MI firmware so you don't have it activated yet.
Check the section for Network/Bearer and Wireless Connectivity on this link: http://www.samsung.com/levant/consumer/mobile-phones/mobile-phones/galaxy-note/SM-N9000ZKEXSG-spec
Match it up with your country's network specifications. There's a reason why these phones don't get sold worldwide, as they aren't all compatible with every region. Also remember to set correct APN values for your country.

nicholaschum said:
Well it looks great. At least I can be sure that your phone shouldn't be a fake. It is of Hong Kong or Taiwan origin, Exynos, running 4.3 on N900ZSUBMI5.
You have CWM Recovery, Xiaolu's port of it. Hence that device was probably rooted prior to getting it handed over to your girlfriend. KNOX is only present on the MJ and onward firmwares, and you happen to be on an MI firmware so you don't have it activated yet.
Check the section for Network/Bearer and Wireless Connectivity on this link:
Match it up with your country's network specifications. There's a reason why these phones don't get sold worldwide, as they aren't all compatible with every region. Also remember to set correct APN values for your country.
Click to expand...
Click to collapse
okay thanks for your reply, I believe the frequencies virgin use are 1800MHz and 2100MHz which can both be used with this phone. The APN settings were downloaded automatically when the phone was first booted and I also manually checked them and they are correct.

Saml91 said:
okay thanks for your reply, I believe the frequencies virgin use are 1800MHz and 2100MHz which can both be used with this phone. The APN settings were downloaded automatically when the phone was first booted and I also manually checked them and they are correct.
Click to expand...
Click to collapse
What is your network switch options in Settings?
Do you have it to HSPA/GSM (auto connect) set? [Sorry if it's not exactly the same, I don't have the N900 model]

My friend pointed this out to me just before I saw your message, the options available are only wcdma/gsm hspa isn't an option. Im guessing from my limited knowledge that this is the problem, what is it I would need to do to fix this? thanks again.

Saml91 said:
My friend pointed this out to me just before I saw your message, the options available are only wcdma/gsm hspa isn't an option. Im guessing from my limited knowledge that this is the problem, what is it I would need to do to fix this? thanks again.
Click to expand...
Click to collapse
Actually, I asked my friend who has the N900, he's reporting the same as you. So no problem in that.
There must be something else that can be isolated to find what's going on. You can try to upgrade the phone to the latest modem by flashing the latest 4.4.2 ROM.

Okay, what would be the best way to flash the latest ROM? Would this be a custom ROM or is there a way to get the official one? Thanks again.
Edit: I have now tried putting Dr Ketans rom on it, telling it to use the ROMs modem, and that still didnt fix the problem. I have also tried flashing some other modems from the GSM modems collection thread but the problems persist. The symptoms are as follows:
Frequently looses signal
only ever shows the E or G symbol for mobile internet connection (whereas on my other phone with the same sim it instantly gets full signal and shows H+ or 3G)
the phone has also never been able to lock onto a GPS location it only ever shows searching for GPS in the notifications bar.

Galaxy S4 SM-S975L questions/issues.

Long time reader and tinkerer, but first time poster... This is a two-part thread:
I picked up a cheap used Samsung Galaxy S4 phone, hoping to unlock it and use it. When I received it, it was a SM-S975L, which I can barely find any information on:
Model number: SM-S975L
Baseband version: S975LUDUANB1
Kernel version: 3.4.0-2485535 [email protected] #1 Tue Feb 4 17:57:30 KST 2014
Build number: JSS15J.S975LUDUANB1
SE for Android status: SEPF_SM-S975L_4.3_0017
Product code: SM-S975LZKATFN
Current firmware on my phone: www DOT sammobile DOT com/firmwares/3/?download=28755
Part 1: Custom ROM.
I want to use a Google Edition ROM instead of the bloatware that comes on carrier devices. I'm unable to find a recovery for the SM-S975L, much less a custom ROM though. Is anyone out there that would entertain the idea?
PARt 2: SIM Unlock.
With my sim in the phone, a SIM Unlock code screen doesn't pop up on its own. I typed #7465625*638*# into the dialer and it did finally appear. I was able to successfully sim-unlock it once. But after a phone reboot, the phone was re-locked and the sim unlock code I previously used no longer works. Has anyone ever had this happen? I would like a permanent solution to sim-unlock.
Thanks!

Hi jeredh....I have the same questions as I just ordered this model. Have you solved or tried out anything on your 2 questions?
-JC

I wound up selling it and changing to an S5 Active. No luck at all finding anyone or anything for that phone.

Another purchaser of the S975L here. Thought $249 was a great deal for this phone, but got home and realized that it's actually a really locked down phone. No permanent way to unlock it (unless you own it for a year in which case Tracfone will unlock it), bootloader is locked, no one has developed a custom ROM for it, and the complete tethering framework has been removed (so not even rooted tethering apps will work). It's a good bet that Straight Talk will never update the firmware on it either. That last one is a huge bummer because Android 4.3 is *okay* for now, but KitKat has been out for a while, and Lollipop will be ported very soon. It's fantastic hardware gimped by awful software. A shame really. I'll probably hang on to this phone for a little while since it's a definite improvement over my old iPhone 4S, but I'd like to move to something I have a little more control over.
The only solace I have is that it's easily rootable using TowelRoot.

Follow this post http://forum.xda-developers.com/galaxy-s4/help/how-to-unlock-galaxy-s4-straighttalk-sm-t2816029 aromerblz is making nice progress. Twrp can be installed just fine. Read the thread

jeredh said:
Long time reader and tinkerer, but first time poster... This is a two-part thread:
I picked up a cheap used Samsung Galaxy S4 phone, hoping to unlock it and use it. When I received it, it was a SM-S975L, which I can barely find any information on:
Model number: SM-S975L
Baseband version: S975LUDUANB1
Kernel version: 3.4.0-2485535 [email protected] #1 Tue Feb 4 17:57:30 KST 2014
Build number: JSS15J.S975LUDUANB1
SE for Android status: SEPF_SM-S975L_4.3_0017
Product code: SM-S975LZKATFN
Current firmware on my phone: www DOT sammobile DOT com/firmwares/3/?download=28755
Part 1: Custom ROM.
I want to use a Google Edition ROM instead of the bloatware that comes on carrier devices. I'm unable to find a recovery for the SM-S975L, much less a custom ROM though. Is anyone out there that would entertain the idea?
PARt 2: SIM Unlock.
With my sim in the phone, a SIM Unlock code screen doesn't pop up on its own. I typed #7465625*638*# into the dialer and it did finally appear. I was able to successfully sim-unlock it once. But after a phone reboot, the phone was re-locked and the sim unlock code I previously used no longer works. Has anyone ever had this happen? I would like a permanent solution to sim-unlock.
Thanks!
Click to expand...
Click to collapse
If you have the unlock code and root, then follow this.
1. install samsung phone info tools from the market. Run it and allow super user access on it.
2. Press menu and go to secret codes, and let it load.
3. Once generated scroll until you find 7465625*638* you should see two. One that says unlock and other says lock.
4. Select the one that says lock. Press it and select "launch 0" on MCC/MNC field enter your carriers MCC/MNC code.(google it if you dnt know it) on the Control Key enter unlock code. Press ok.
5. Select the 7465625*638* that has unlock on it, press launch 0, enter unlock code. Press ok.
6. Hit thanks, device should be unlock with no neet to reboot.
**You need to do this everytime you turn off, turn on, or restart the phone.
Question: Wondering how you got the unlock code?

WAITING
Hello,
I will follow the question, how did you manage to get a code?
I really want to at least unlock my phone to use it,
I know aromerblz is going to make a guide, I have to wait and try it, I am really not having idea what to do to make it work

NO UNLOCK CODE for Permanent Unlock!
.
An UNLOCK CODE for this phone only TEMPORARILY unlocks it.. everytime you power off and phone on OR restart it then it will ask for the code again.. This phone is very well programmed and cannot be permanently unlocked. This is a Straighttalk phone.. its not meant for other carriers.. if you bought this thinking you were getting a deal you were probably wrong.

network unlock
if I purchase a code from a third party and I enter it everytime I reboot does it work on the other network everytime ?

Sm-s975l unlock info
This model is permanatly unlockable through Straighttalk after a 1yr of active service ( If you are late adding time & if your phone deactivates, you must begin the 1yr requirement from the begining )
But good News there are 2 compatible Models of the S4 you can use to Customize your SM-S975L.
Most ROMS are compatible. You will need to have your Device "ROOTED" with Custom Recover Software.
Just my advice use TWRP as Cmod tends to Brick Devices " Just from Personal Experience "
The M919 - Forums General Location
http://forum.xda-developers.com/galaxy-s4-tmobile
The I9505 - Forums General Location
http://forum.xda-developers.com/galaxy-s4
The Most Compatible ROM for the SM-S975L was Created by a Very Talented Developer "The Sickness"
Download V11 4.4.2 & the Mod File. Now Boot into Recovery Flash the Rom 1st following the instructions provided on the download page allow the 1st boot up to complete. Name your phone & all that other fun setup info Stuff. Then reboot into Recovery, & do a advance wipe on Cache & Delvic lol & you can now flash the MOD pack, I recommend choosing the Ktweaker OC Kernel by Ktoonz you can pplay around with the other Mods but be warned the S5 Mods Tend to cause device errors with settings/menu/&keyboard. This rom http://forum.xda-developers.com/showthread.php?t=2683507
DONT LET ANYONE TELL YOU THE INSANE HYBRID 4.4.4 ROM UPGRADE IS BETTER ITS NOT THAT ROM IS BLOATED AND SLOW AS DIRT
There aren many ROMs to choose from icecream sanwich to marshmellow But none as good as "Sickness's" INSANE KITKAT Versions Vary but the Only Rom that comes even Close is SPIKE LABS 4.4.4 GAMING ROM with kernel juicer but its still a bit jittery at times when the GPU is pushed & games are Drawing Heavily On Your Device..
As far as the Baseband is concerned you can remove it and attempt to upgrade it Via ABD pull & push. " Aquire ABD & fastboot files & launch CMD W/ADMIN RIGHTS" & it is possible to use ABD CMDs to remove & apply another Basebamd but this could super brick your Device if it is not unlocked.
Hope this Helps Lot Peeps

aromerblz said:
If you have the unlock code and root, then follow this.
1. install samsung phone info tools from the market. Run it and allow super user access on it.
2. Press menu and go to secret codes, and let it load.
3. Once generated scroll until you find 7465625*638* you should see two. One that says unlock and other says lock.
4. Select the one that says lock. Press it and select "launch 0" on MCC/MNC field enter your carriers MCC/MNC code.(google it if you dnt know it) on the Control Key enter unlock code. Press ok.
5. Select the 7465625*638* that has unlock on it, press launch 0, enter unlock code. Press ok.
6. Hit thanks, device should be unlock with no neet to reboot.
**You need to do this everytime you turn off, turn on, or restart the phone.
Question: Wondering how you got the unlock code?
Click to expand...
Click to collapse
I was in the same boat, had an unlock code, it worked one time then after a reboot it would not accept the unlock code. I happened upon this post (while I was searching for the stock ROM to reload on it), and decided "what the hell let me try these steps"....it works. I don't mind going through these steps on each reboot. Infact I made it a bit easier, I installed Shortcut Master (Lite) and made two short cuts, one for the lock and one for the unlock.
Thank you for posting these steps.

erichss said:
I was in the same boat, had an unlock code, it worked one time then after a reboot it would not accept the unlock code. I happened upon this post (while I was searching for the stock ROM to reload on it), and decided "what the hell let me try these steps"....it works. I don't mind going through these steps on each reboot. Infact I made it a bit easier, I installed Shortcut Master (Lite) and made two short cuts, one for the lock and one for the unlock.
Thank you for posting these steps.
Click to expand...
Click to collapse
You are welcome..

aromerblz said:
You are welcome..
Click to expand...
Click to collapse
Though I do have a question. Are there any ROMs out there that are based on Android 5.x that will work with this? I tried flashing Cyangenmod but the "secret" codes needed don't seem to work at all, infact Phone Info only shows like 12 or 13 codes.

erichss said:
Though I do have a question. Are there any ROMs out there that are based on Android 5.x that will work with this? I tried flashing Cyangenmod but the "secret" codes needed don't seem to work at all, infact Phone Info only shows like 12 or 13 codes.
Click to expand...
Click to collapse
Yes there is.. Any TW based ROM for the SGH-M919 or GT-I9505 works for this phone. CM, AICP or ASOP ROM's do not work as they lack the perso codes for unlock.

aromerblz said:
Yes there is.. Any TW based ROM for the SGH-M919 or GT-I9505 works for this phone. CM, AICP or ASOP ROM's do not work as they lack the perso codes for unlock.
Click to expand...
Click to collapse
Thanks.
You happen to have links to them?

erichss said:
Thanks.
Click to expand...
Click to collapse
Clarification, they do work if you live in the USA as you will still use with TracFone service. But to uses on another carrier you need the unlock code and a TW based custom ROM. Where you got your code?

aromerblz said:
Clarification, they do work if you live in the USA as you will still use with TracFone service. But to uses on another carrier you need the unlock code and a TW based custom ROM. Where you got your code?
Click to expand...
Click to collapse
I got my code from imei-unlocker.com
Like I mentioned in my original reply, the code worked once then after a reboot it was locked and the code was not working. But with the steps that was posted, I am able to use my T-Mobile SIM and just go through them steps after each reboot.
Oh and the best part, the site actually refunded my money cause I was working with them as to why the code stopped working.

erichss said:
I got my code from imei-unlocker.com
Like I mentioned in my original reply, the code worked once then after a reboot it was locked and the code was not working. But with the steps that was posted, I am able to use my T-Mobile SIM and just go through them steps after each reboot.
Click to expand...
Click to collapse
Oops, missed that. Cool then.

aromerblz said:
Oops, missed that. Cool then.
Click to expand...
Click to collapse
It's all good. Just need to find a TW based ROM now. Thanks
If you have links to any that you know to be decent, it would be much appreciated

Straight Talk SM-S975S unlock
This phone is unlockable by design. The only way Straight Talk gets around the" unlock law " is they offer you a credit towards another phone, my offer was $100. I have a friend that works for Samsung and he researched it at work, talked to the tech's and was
told Straight Talk ordered the phones this way to stop people from buying their cheap phones then switching companies.

[Q] Canadian Note 3 Help

Hello. Please forgive me for being a noob, but I'll do my best to be precise.
But, I decided to sign up and create a topic here because I need some specific help and/or clarification.
(Sorry if I am perhaps not in the correct place but my brain is numb from hours of reading all areas here)
The story:
Purchased used Samsung Galaxy Note 3 in Canada originally on WIND Mobile. Unlocked phone for use on TELUS.
After a month, the phone ended up getting blocked IMEI due to it being reported lost/stolen.
Purchased "IMEI repair" service with free SIM unlock and sent phone away to "Joe The Android Rooter" (androidrooter.com) based on other's similar experiences and praise.
Received phone back, IMEI good, phone in good working order.
The problem:
The Note 3 with manual APN settings via a phone call with Telus only has Network Mode options WCDMA/GSM (Auto), WCDMA or GSM only. Phone gets 3G signal. Slow data speeds are fine, but my text messaging and phone calls rarely work where I live, which is a rural area. Dropped calls, lost texts, or no service. My Samsung Galaxy S3 does LTE and never has an issue. I would prefer to have faster data and reliable network/modem mode.
Called Telus again, and was directed to this thread here: http://forum.xda-developers.com/showthread.php?t=2489766
Have been reading around here wherever I could find information, and I'm not totally confident or clear about doing that.
It is all a little confusing to me so I need some straight forward help. I would be forever in debt.
The questions:
According to that thread, I would have to follow all those steps to enable LTE on my phone. What do I need to ensure that nothing has been modified with the IMEI repair so I don't run into any problems?
I tried the step of using the dialer for *#272*[IMEI]# and it brought me the options, and the Telus one (TLS) is listed. Can I just make that change, and voila? Or do I have perform root, etc? I'm just trying to make this easy and from what I read, I shouldn't even have been able to bring up that option through the dialer in the first place?
This thread here: http://forum.xda-developers.com/showthread.php?t=2618684 made me second guess everything.
The phone information:
AP: N900W8VLUCNB7
CP: N900W8VLUBMJ4
CSC: N900W8OYACNB7
Model Number:
SM-N900W8
Android Version:
4.4.2
Baseband Version:
N900W8VLUBMJ4
Kernel Version:
3.4.0-859721
[email protected] #1
Thu Feb 27 17:06:41 KST 2014
Build Number:
KOT49H.N900W8VLUCNB7
SE for Android Status:
Enforcing
SEPF_SM-N900W8_4.4.2_0017
Tue Jun 24 18:55:11 2014
Security Software Version:
MDF v1.0 Release 2
Shows as Official.
I hope I have provided all the info and posted in the right spot and I am very grateful for whatever help and clarification I could get.
Sorry for the length, but thanks for taking the time to read it.
-Adam, Canada.

You just have to do the 272 code to switch to Telus... You should have lte after that. But beware, this will completely reset your device... You will have to reconfigure it from scratch.
You might as well upgrade it to the latest firmware... Your baseband should be nb7 also... Or ni1 if you use the latest videotron firmware to manually upgrade. To your will still have to change the csc (272 code) to get the correct config from r Telus
Envoyé de mon SM-N900W8 en utilisant Tapatalk

Resetting isnt an issue or anything. My main concern is doing the code/csc change, still being able to do OTA updates, or at least over Kies. I'm happy enough sticking with OTA and TouchWiz and not toying around with the phone otherwise.
I've rooted (and loved) all my devices in the past (HTC, Motorola, LG) but had such a problem with my Galaxy SIII and when I tried to root it, not only was it the most difficult, but it turned it into a nice paperweight.
I got a good deal on this phone and like the size is all.

Mr3ff said:
Resetting isnt an issue or anything. My main concern is doing the code/csc change, still being able to do OTA updates, or at least over Kies. I'm happy enough sticking with OTA and TouchWiz and not toying around with the phone otherwise.
I've rooted (and loved) all my devices in the past (HTC, Motorola, LG) but had such a problem with my Galaxy SIII and when I tried to root it, not only was it the most difficult, but it turned it into a nice paperweight.
I got a good deal on this phone and like the size is all.
Click to expand...
Click to collapse
If you change the csc with the 272 code, you shouldn't have any trouble doing ota updates. All stock Canadian roms are exactly the same... You can download and install a bell rom on a Rogers device and retain your Rogers apps/config. Only the csc is changing... And this csc is there to reconfigure your device for the specific provider.
Worst thing worst, you will have to manually download and install the latest stock rom with Odin... And after that, you will be fine. But I really doubt that you will have to do this.

Well thank you!
I backed up the phone with Kies just to save my settings and simple stuff so I wouldn't have to do it again manually, but I don't mind doing it again if I have to.
Used the code to change the CSC, rebooted, LTE is working fine. Texts+calls all function like they used to without dropping my signal and stuff.
Just using Kies to restore little stuff and I'm good.
I checked to see if I have root, which I don't. What I wonder is why everything I read told me I shouldn't have been able to simply dial that code and change the CSC without rooting? I have seen a number of people having similar issues, but if it really was this simple without root, why is it not clear that you simply just need to do this? Heck, even Telus told me to root the phone. I didn't expect that.

Mr3ff said:
Well thank you!
I backed up the phone with Kies just to save my settings and simple stuff so I wouldn't have to do it again manually, but I don't mind doing it again if I have to.
Used the code to change the CSC, rebooted, LTE is working fine. Texts+calls all function like they used to without dropping my signal and stuff.
Just using Kies to restore little stuff and I'm good.
I checked to see if I have root, which I don't. What I wonder is why everything I read told me I shouldn't have been able to simply dial that code and change the CSC without rooting? I have seen a number of people having similar issues, but if it really was this simple without root, why is it not clear that you simply just need to do this? Heck, even Telus told me to root the phone. I didn't expect that.
Click to expand...
Click to collapse
You never have to root a phone to change the csc when the target csc is already included on your rom... Which is the case for the Canadian version of the note 3... It contains all csc for all Canadian providers (at least those that are selling it). And I think it's the same for all recent Samsung devices...
I believe You need root to change csc when the csc you want to use is not in your rom and you want to flash an other rom that includes the new csc.

tprevir had
How come then, such as on that thread here that initially sparked my willingness to do all this, was it not simply mentioned in there that one could just use the code and make the change, without having to deal with all the rooting/etc?
Of course rooting has many benefits, but some may just simply need the carrier/radio switch to enable LTE and nothing more - such as myself. (I'm okay with stock because of the S-Pen, but I am certainly considering rooting the device down the road, once it becomes "stale" to me)
As stated in http://forum.xda-developers.com/showthread.php?t=2489766 "Have a Samsung Galaxy Note 3 (model: SM-N900W8) and wish to enable LTE for a specific carrier? Follow these in-depth instructions and you will enable LTE for this specific model." which was the most comprehensive thing I could find via Google, but it really did make me wonder if it was all truly needed, to which it was not.

probably no one know at that time that all Canadian Note 3 were using the exact same rom...
that being said, not all SM-N900W8 are the same... this model is also used in other contries... so if one had bought it somewhere else, he would need to do more things to finally get LTE and/or the correct carrier apps.
The thread is from April... and at that time, I just had my device for a few days... and I did not know that we could only change the CSC to switch the configuration for an other provider. I learned a lot by reading on this subject here and there.
Envoyé de mon SM-P900 en utilisant Tapatalk

Maybe i'm wrong but i noticed you have NB7 Rom but MJ4 baseband and your problem is probably here. I bought a used note 3 and it was in the same condition. i wasn't getting LTE. If you try to upgrade your phone via ODIN, you have to go to download mode by powering off the phone first . If you go to download mode by any other way the modem partition is protected and will be not updated. I've reflashed the entire Rom and now i have NB7 baseband and NB7 Rom and i'm getting LTE with fido. Hope this helps!

Tornade69 said:
Maybe i'm wrong but i noticed you have NB7 Rom but MJ4 baseband and your problem is probably here. I bought a used note 3 and it was in the same condition. i wasn't getting LTE. If you try to upgrade your phone via ODIN, you have to go to download mode by powering off the phone first . If you go to download mode by any other way the modem partition is protected and will be not updated. I've reflashed the entire Rom and now i have NB7 baseband and NB7 Rom and i'm getting LTE with fido. Hope this helps!
Click to expand...
Click to collapse
That's what I was concerned about at the beginning (NB7 & MJ4) but my solution was to quickly backup what few things I wanted to keep from my phone (a few pictures, contacts, settings) and then do the *#272 code and select Telus. Once it rebooted, everything worked good as new. In fact, my up/down speeds are through the roof compared to the SGS3 that I had previously and for whatever reason the quality of sound in phone calls are dramatically increased. Like AM radio to FM.
Either way, doing that code, nothing else had to be done on my phone - no rooting, no tinkering and no hassle - other than entering the code and selecting Telus.

[HELP THREAD] Australian i9505 Users Region-Specific Help

Okay! I've been on this board for almost seven years, with phones ranging from a HTC TouchPro through to my current Samsung Galaxy S4 International GT-i9505. The ROM I'm on right now is (with thanks to AntaresOne) cm-12-20150315-OPTIMIZED-jflte, available from his thread, below...
http://forum.xda-developers.com/galaxy-s4/i9505-orig-develop/rom-cyanogenmod-12-t2943934
Everything works well - it's fast, has great battery life, the images, screen, text, video all look great, the sound for a phone call is clear and loud, ringtones are loud, the Bluetooth works with my Fusion car stereo and I can play video from it to my Samsung LED TV via wi-fi.
The intention of this Helper Thread is to have somewhere just for Australian users with Galaxy i9505's or i9505T's (the Telstra model) ONLY. That way, the discussions and advice shared is much more 'region-specific'.
On that note, I'll share my experiences with how to get the best out of your phone. Firstly, may I just say please read through these instructions carefully before coming to me with questions. I have spent the best part of five years tinkering with an i9000, then a i9100T, now a i9505 International. Also, there's heaps more help and advice to be found here on XDA-Developers, sammobile and a number of other Android forums, so I've always found it best to research as much as possible to take the very best information that actually works. No question is too stupid, unless you ask one that's been answered a thousand times already, like...
What's the best ROM?, What's the best modem?, How do I root my phone?, and Will rooting void my warranty?
And so, we start afresh with a Galaxy i9505, also known as jfltexx. Back up all your photos and music to your PC, and you'll find any number of apps on Play Store to backup your text messages and call logs. Titanium Pro is the best. It does need root access, but fortunately there are a couple ('SMS Backup & Restore' is one) that you don't need root to use. Seeming though 99.99% of everything you can do to upgrade your phone is best off being done with a clean slate, trust me when I tell you - BACK YOUR STUFF UP AND FACTORY RESET THE DAMN THING!
The most important step - BACKUP YOUR DEVICE'S EFS FOLDER!!! This is a location where information pertaining to your device's IMEI number and Country Code etc. are stored, and this folder can sometimes be wiped when you flash a new ROM. From Lollipop onwards, the way that's done is a bit different, but again there's plenty of apps and methods out there that will do this backup for you. Thing is, most often you'll need to be rooted, so...
You'll find throughout XDA a number of device-specific threads and posts about how to gain root access on your device. The fastest and easiest way to perform this task is to go visit Chainfire...
http://forum.xda-developers.com/showthread.php?t=2219803
The specific file you are looking for is called CF-Auto-Root-jflte-jfltexx-gti9505.zip. You use a nice little program called Odin - which just happens to be included in the package you've just grabbed - to 'flash' that into your phone. Yes yes yes, this voids your warranty and trips the Knox flag. Sadly, as much as you might find people who say that it can be reset, KNOX CANNOT BE CHANGED BACK ONCE IT'S 0x1!
Next, go and check out flatzki's thread at...
http://forum.xda-developers.com/galaxy-s4/general/i9505xxuhoa7-odin-files-100-t3043983
He's just got his hands on the Android 5.0.1 Lollipop Stock ROM for the International Galaxy S4 LTE, jfltexx. Thank him while you're there, and grab the ZIP file I9505XXUHOA7_OXAHOA7.zip. Create a New folder on your Desktop, then (using WinRAR or 7ZIP) extract the contents of the ZIP you downloaded into that folder.
Once you've done that, you'll be looking for a way to get rid of the 'dreaded' Yellow Triangle. Go check out...
chainfire's TriangleAway Thread
and follow the instructions from the Master himself. Grab the TriangleAway-v3.26.apk from the link at the bottom of that post, and throw the man a Donation - the guy reigns supreme with these devices and deserves every bit of credit for the support he gives us all.
Next, go and find yourself a ROM. AOSP (Android Open Source Project) ones are the best. The origins of AOSP ROMs are Google's original Android source code, so you're getting the base code of the OS exactly as the Original Programmer intended. Samsung (and other OEM's) then get their grubby little hands on that code, then go to town making it control their hardware in the manner they want.
Now, there's two lists of Custom ROMs for the i9505 that are shared here on XDA:
For tweaked and altered versions of original stock AOSP ROMs, visit the Galaxy S4 i9505 Android Development section.
For custom ROMs that are pretty much 'outside the box', and built from scratch by individual developers or groups using Android source code, visit the Galaxy S 4 i9505 Original Android Development section.
No matter what you decide to 'flash' in, if you have questions about the ROM itself, how to flash it, or anything else about that particular release, ask them of the ROM Chef in the thread where you got it from. They're the ones who cooked it, so they've already gone through the trials and errors and successes of getting their ROM working on an i9505, making them the best guys and gals to ask if you have dramas with the ROM. 99.9% of the time the ROM Chef's thread will have in the first couple of posts Instructions on How To Flash, FAQ's, known issues, etc.
The advice I give everyone regardless of what device you have is, Back the damn thing up first - it's called a nandroid backup, Google it - and make sure you clean all traces of the old firmware out of your phone thoroughly. More often than not, the dramas people have when they get up and running on a newly flashed ROM (or, issues in restarting the device after a flash) can be directly attributed to remnants of the old ROM interfering with the new. This is especially so for flashing via Recovery. If you use Odin to flash a Stock firmware, it pretty much smashes its way over the top of whatever you've got installed, and gives you a fresh palate to work with.
Now, if you're having issues with carrier network connectivity, call quality, mobile internet etc., it could be either your network APN (Access Point Name) settings or your ROM's 'modem' package. APN settings are within the phone's Network setup menu. The best list of Australian carrier APN's I've found is at Ausdroid Forums. Modems are a sort of 'try them until you get one you're happy with' kind of thing, and if you're still in the dark, go and read Formhault's post about the subject at...
http://forum.xda-developers.com/showpost.php?p=50787570&postcount=2549
My advice when it comes to modems is, grab a couple of CWM-flashable modems and take at least two days of testing each until you get one that gives you enwhitenment.
Hope that gets your device running smikko, and if you're that stuck you need a bit of special attention, PM me. Lastly, make sure to click on the Thanks button if you got help from this tutorial...

[SM-J5108] Convert my J5 SM-J5108 to a more usable version ? (510F ?)

Hello,
My title may not be very cler but I can't find any custom ROMs for my device the J5 SM-J5108CHM (J5 China Mobile version) I can find official firmware but I just hate the interface, I found a really good-looking ROM (VIperOS) but it was for another variant of the phone.
So my question is : can I convert this phone to some other variant with same specs ? Thanks in advance

I've got the same question but no one seems to go to this thread if anyone has an answer to this that would be very appreciated. the j5108 seems to have all the same specs as the other variants so it should work but I'm not taking any risks because this is my everyday phone.
also the china mobile os is complete rubbish use this one (im a new user so i cant post link but just search up updato (dot) com, go to search bar and search j5108, in teh filters bar up top choose hong kong and press update under the search bar)
First, install any lollipop update (if you skip straight to marshmallow you'll end up in a bootloop), and then install either OTA update (it keeps failing for people but its good if you don't want to use Odin again) or you can download the marshmallow os after you install lollipop (make sure to NOT do a factory reset etc you'll end up in a boot loop). Install MM os and boom GAPPS and everything else you'll need.

jeff the cheff's left nut said:
I've got the same question but no one seems to go to this thread if anyone has an answer to this that would be very appreciated. the j5108 seems to have all the same specs as the other variants so it should work but I'm not taking any risks because this is my everyday phone.
also the china mobile os is complete rubbish use this one (im a new user so i cant post link but just search up updato (dot) com, go to search bar and search j5108, in teh filters bar up top choose hong kong and press update under the search bar)
First, install any lollipop update (if you skip straight to marshmallow you'll end up in a bootloop), and then install either OTA update (it keeps failing for people but its good if you don't want to use Odin again) or you can download the marshmallow os after you install lollipop (make sure to NOT do a factory reset etc you'll end up in a boot loop). Install MM os and boom GAPPS and everything else you'll need.
Click to expand...
Click to collapse
You can't. Its a different phone. Maybe you think because it says J5 chinese version that its the same thing, just different model number. There are reasons why ot has a different model number, baseband, etc... Its like you have the Samsung Galaxy S2 with exynos and the American one with SD. They are both S2, but totaly different phones.

does xda have a word cap or did my other post not post because it was long or is the image verification a post-verification. anyway, i was saying that all the j5 2016 variants are exactly the same which in theory would allow any model's OS to work on any variant. S2 isn't a great comparison because different models have different hardware while j5 2016 has different models with identical hardware. Just search up j5108 specs and j510x specs and they'll all be the same ill post back in a few weeks when I get a new battery and test out different OS (rn I'm using the stock hong kong OS). I'll try OS for different PDAs and then ill try out different models. Btw all the spec sites say the variants are compatible with Australia so I shouldn't have a problem using different models OS in Australia (meaning 4G, wifi, phone numbers etc should be fine).
Also please explain in more depth why j5 2016 variants are so different to the point that they have different model numbers (i know that sounds passive aggressive and pretend it isn't I honestly want to know). I'm super sorry if I sound like an arrogant **** that wants everything his way but the way the j5 2016 models are made they all seem identical and logically (and in theory) the other variants OS should work on the j5108. if for some reason I cant see my first reply but others can I'm so sorry for this post.

jeff the cheff's left nut said:
does xda have a word cap or did my other post not post because it was long or is the image verification a post-verification. anyway, i was saying that all the j5 2016 variants are exactly the same which in theory would allow any model's OS to work on any variant. S2 isn't a great comparison because different models have different hardware while j5 2016 has different models with identical hardware. Just search up j5108 specs and j510x specs and they'll all be the same ill post back in a few weeks when I get a new battery and test out different OS (rn I'm using the stock hong kong OS). I'll try OS for different PDAs and then ill try out different models. Btw all the spec sites say the variants are compatible with Australia so I shouldn't have a problem using different models OS in Australia (meaning 4G, wifi, phone numbers etc should be fine).
Also please explain in more depth why j5 2016 variants are so different to the point that they have different model numbers (i know that sounds passive aggressive and pretend it isn't I honestly want to know). I'm super sorry if I sound like an arrogant **** that wants everything his way but the way the j5 2016 models are made they all seem identical and logically (and in theory) the other variants OS should work on the j5108. if for some reason I cant see my first reply but others can I'm so sorry for this post.
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Click to collapse
Phones today can have the same harware, same SoC, same RAM, same everything, even the same RIL preferences, but they are different models. The whole stock software was made for a specific device model. The J510FN is different than the J510H, if there was no difference why would Samsung bother to make many versions? The whole operating system, every part of it: Kernel, Apps, Recovery, Hal, Bootloader are mannualy made for a specific model number. Because of that it is hard to make a ROM that supports all of the phones in one Samsung model family lineup. You see now that by pure logic the j508 is very different from the J510FN