Database Info

[PATCH] Patch CDMA to GSM for Android Global Phones

This is a patch to fully enable the GSM on CDMA Global phones.
The Global Phones are phones with CDMA and GSM modems but that are usually configured to primarly work on CDMA network and at least to be able to call on GSM network.
The patch is working on every Stock Rom, on every AOSP Rom and on every Android version.
If you are successfully using this patch please comment the thread with your phone model.
This patch will enable:
- GSM/UMTS -> [GSM auto (PRL)] in Testing menù
- SMS
- MMS
- 3G Data
- USSD Code
- Call Forwarding
- Testing menù to manage the baseband accessible dialing the code *#*#4636#*#* (locked on Verizon Phones)
How to install:
- Copy the .zip file to the external memory or memory card
- Reboot your phone and enter on your custom recovery
- From the Install menu select the .zip file and instal withotut signature verification on your Rom
Risk of briking:
- no one: during installation the installer checks everything is ok and stop installation in case of problem; in case of problems after installation the old settings can be restored by simply installing the patch a second time. In this way you can test the gsm settings without any risk.
Advice post-installation:
- If the patch has not been installed on a clean system then you have to do a factory reset
- On the AOSP Roms the Patch is persistent, when you will update your rom you do not have to reinstall the patch
- *#*#4636#*#* -> Phone info -> Set prefered network type -> GSM auto (PRL)
How to uninstall:
- To uninstall the patch you have to reinstall it a second time from the custom recovery
The patch should work on every CDMA Global Phone.
The patch should work on every Rom.
Download the patch here
If someone successfully use this patch on some other model please leave a comment in this page, so I will be able to update the above list.
If someone has edited this patch to support some other phone please inform me so as not to waste information and in this way I can update the patch.
Any help is precious.
HOW TO POST REQUEST FOR HELP:
You have to entirely read this thread, I do NOT answer redundant question.
If you want to know if the patch is compatible with a phone then you have to attach the /system/build.prop in your post in this thread because i don't know all phones. (You can also send me the build.prop as attachment via the contact section of my site.)
If you installed the patch and there are problems you have to attach (and do not post) your /system/build.prop and your /system/build.prop.bak.
I do not answer to requests for help in private, I have neither the time nor the interest in doing so.
Any doubts, questions or requests must be posted in this thread in order to answer a single time and help everyone.
XDA:DevDB Information
Patch CDMA to GSM for Android Global Phones, Tool/Utility for the Android General
Contributors
Mentor.37
Version Information
Status: Stable
Current Stable Version: 4.2.7
Stable Release Date: 2016-04-25
Created 2014-12-04
Last Updated 2016-04-25

The patch has been updated.

The patch has been update.
Everyone can help me to extend support for more phones.
Thanks.

Patch updated for better GSM support.

works flawless on my Razr xt912 in Pakistan using Gsm network.
Thanks a lot man.:good:

Available a new update to solve problems with apns on 4.3.x roms.

It works on my Droid razr Maxx xt912 with CM10.2-20131020-NIGHTLY-spyder ROM, my phone is using GSM carrier

New version working well on Vodafone Ireland with cyanogenmod 10.1.3 on XT912.
This version also leaves the ROM version intact - older version for 10.1.2 seemed to update the string.

The version that changed the string was only for the xt894 with cm 10.1.2, that was the first version.

Works great on my XT912 with MIUI v5. Thanks.

Mentor.37 said:
This is a patch to fully enable GSM on every Stock Rom, on every AOSP Rom and on every Android version.
This in not for US users, in US the GSM is locked in RIL.
Release 1.6 - 20/10/2013
Click to expand...
Click to collapse
I may have misinterpreted the topic I guess, but did install this while I was overseas with my Verizon phone, everything was fine but now it seems as I am unable to find 3G network back in the US. I have changed the specs from GMS/CDMA , etc on the settings but no signal of 3G/LTE.
Anyone has had this issue before? Any way to turn it back to normal so that I can get data here in the US?

blustosa said:
I may have misinterpreted the topic I guess, but did install this while I was overseas with my Verizon phone, everything was fine but now it seems as I am unable to find 3G network back in the US. I have changed the specs from GMS/CDMA , etc on the settings but no signal of 3G/LTE.
Anyone has had this issue before? Any way to turn it back to normal so that I can get data here in the US?
Click to expand...
Click to collapse
In US you can not use the GSM on many Verizon phones, you have to use the CDMA and you have to restore build.props and apns list.

The patch has been successfully tested on droid bionic xt875 in and outside the US and on droid 3 xt862.

Mentor.37 said:
The patch has been successfully tested on droid bionic xt875 in and outside the US and on droid 3 xt862.
Click to expand...
Click to collapse
Mentor.37 said:
I need your build.prop.
Click to expand...
Click to collapse
Mentor I have a question.
I flashed on XT912-Spyder CM 10.1.3 but even before I did flash I would have no service at all , I have Euorpean sim card which has active roaming.
When I put it into iPhone 4S it shows T-Mobile USA but in settings T-Mobile.Poland settings so it roams, it gets signal,receivies texts.
IN XT912 it only shows phone number in settings that is all , i flashed your patch.. I will do it again maybe it will help I don't know.
Can you help me? if I get sim to work I will have my buddy replace screen,battery everything and put this phone into use for someone.

You could try installing the patch on clean system before first boot without restore any backup.
Let's me know.

Mentor.37 said:
You could try installing the patch on clean system before first boot without restore any backup.
Let's me know.
Click to expand...
Click to collapse
EDIT:
Same thing I just did what you told me it instantly showed the European phone number Poland area code +48.
Signal Strength : 0 dBm 99asu
I can't understand how when I put it in Verizon 4S which was Unlocked by VZW it shows signal,receives texts etc.. the droid razr after JB update was suppsed to be unlocked for European use for example.
It even synced local time in Poland which is +6 hours! it seems to pull up number and time but no signal
Is there anything else I can try?

In your recovery: factory reset, wipes, install patch and then reboot phone.

Mentor.37 said:
In your recovery: factory reset, wipes, install patch and then reboot phone.
Click to expand...
Click to collapse
Yep did that and still no ago same thing.
Before I got the phone (Got it for free)
when I first put AT&T simcard it showed me roaming triangle for few seconds ever since that time the signal just does not work.. at all.

The xt 912 is GSM locked in the US and could be locked for AT&T sim outside US too, you could try with another sim.

Mentor.37 said:
The xt 912 is GSM locked in the US and could be locked for AT&T sim outside US too, you could try with another sim.
Click to expand...
Click to collapse
Well yes I know so why when I put in T-Mobile Poland sim card which roams on T-Mobile USA it shows nothing but only phone number? it's weird.
Works fine in 4S unlocked by Verizon.

what's causing slow network speeds?

I'm running the KitKat+ ROM I found in the development section plus faux kernel, I flashed over jellybean and applied fix v2 so I'm getting no problems uninstalling apps or entering security settings. Thing is when I'm at home or even outside I get really slow network speeds of about 0.4 Mbps down,and in settings-aboutphone-status it switches between hspa and hspa+,but down the road about 350 metres at my kids school I get up to 7 Mbps down,I'm just wondering what version of the moto g is this KitKat+ rom based on,I own the UK retail version and was thinking if its based on a us version would it cause problems with connecting to a UK network or have problems with hspa+ in the UK based on what base this ROM is using,just throwing it out there.

Have you tried setting it to GSM auto (PRL) ?
My previous phone (HTC One X+) was running BlackBean rom and was set to CDMA by default, meant that i had to reset to GSM after every reboot.

I have experienced this also on a UK XT1032 running US Global GSM 4.4.2 - Data works but often slowly and stops entirely for periods of time. I had assumed it was the ROM and I'm waiting for the UK 4.4.2 stock firmware image which I expect will solve it. Perhaps unrelated, but I've noticed Opera Mini will not work over 3G in this ROM, but it works fine on Wifi.
EDIT: I was just thinking; that by fastboot flashing the Stock US firmware image, the UK modem firmware may also have been replaced. That could explain the problems. Flashing back the 4.4.2 UK modem firmware might fix it.
My Baseband version:
MSM8626BP_1032.340.63.00R​
Can someone with a US Global GSM XT1032 confirm their Baseband version? Nevermind, confirmed via google. UK Tesco XT1032 running 4.4.2 also has the same Baseband version.
You could try flashing the UK stock 4.4.2 'NON-HLOS.bin' which appears to include the modem firmware. However if I remember correctly, flashing an incorrect radio firmware is one of the few ways to irrecoverably brick a handset.
Safest bet is to wait for the full UK stock 4.4.2 firmware image and fastboot flash that. In future when you flash a different ROM, i.e CM11, you are likely to use CWM/TWRP and the existing UK modem / radio firmware will remain untouched.
If someone wants to correct me on this, please do.

Rom with Functioning Fingerprint scanner and data - International

Hi guys, I have a G900p on 4.4.2 rooted with Phils recovery. My goal with this phone was to be able and use data internationally once it was unlocked, data didnt work on stock software. So I flashed Shohat Rom v5 and that made my data work, but my fingerprint scanner was unusable. What rom can I flash into this phone to have functioning data and functioning fingerscanner. Please consider that I am in Mexico which is international and I need data.
Thank you

the newest stock rom now has international data working
G900PVPU3BOK4 12/02/2015
Sprint Global Roaming
Security Updates
Minor UI Updates

I have an s5 on 5.0
Robalboa said:
the newest stock rom now has international data working
G900PVPU3BOK4 12/02/2015
Sprint Global Roaming
Security Updates
Minor UI Updates
Click to expand...
Click to collapse
Hi, I also have a G900p sprint S5 on 5.0 software - G900PVPU3B0G1, but it also picks up no data at all here internationally. It picks up signal calls and all, but no data and I cant find the way to downgrade it to 4.4.2 since every time I try with Odin it simply fails. I wouldnt want to upgrade it to that new version, since then I think it would be even harder to downgrade to 4.4.2? hope you can lend a hand and let me know.
Thanks

CellTech03 said:
Hi, I also have a G900p sprint S5 on 5.0 software - G900PVPU3B0G1, but it also picks up no data at all here internationally. It picks up signal calls and all, but no data and I cant find the way to downgrade it to 4.4.2 since every time I try with Odin it simply fails. I wouldnt want to upgrade it to that new version, since then I think it would be even harder to downgrade to 4.4.2? hope you can lend a hand and let me know.
Thanks
Click to expand...
Click to collapse
well you cant downgrade the bootloader to anything below OG1 if your on stock. but if you root it you can install any custom rom through the custom recovery you added when rooting.
including flashing a 4.4.2 rom as long as your rooted with custom recovery.
when you flash a rom in the custom recovery your only flashing the rom itself not the bootloader. so you can go back to whatever rom you want but it must be done through a custom recovery. so to break it down
even if you upgrade and it doesnt give you the data your looking for you can root and flash an old rom.
one old trick that used to reset the data was a dialer code ##SCRTN# (press those digits in the dialer pad) it resets the entire data profile for the phone . so good luck the rest should be in the forums

If I'm on OG1 and rooted I can flash back to 4.4.2 ? Do I need to flash modem and kernel from the older version I'm flashing ?

Wiped modem

I recently unlocked my moto, installed twrp and aokp7.1. due to some reason, tried restoring backup from twrp but didn't unselect modem. During restoration my modem was wiped and the backup file didn't have modem backup. In the end it shows failed to mount modem, system or device busy. Now my phone keeps on showing the boot animation .
Mine is Indian version moto turbo xt1225
Please help.

Super_Commando said:
I recently unlocked my moto, installed twrp and aokp7.1. due to some reason, tried restoring backup from twrp but didn't unselect modem. During restoration my modem was wiped and the backup file didn't have modem backup. In the end it shows failed to mount modem, system or device busy. Now my phone keeps on showing the boot animation .
Mine is Indian version moto turbo xt1225
Please help.
Click to expand...
Click to collapse
Boot into TWRP. Connect USB cable to a computer and drag these files below over to your phone, preferably to the Download folder.
While still in TWRP, flash the @bhb27 "clean modem" file (just in case), then re-flash your XT1225 radio. Reboot your phone.
* BHB27 Clean_modem_status.zip (CLEARS YOUR MODEM CACHE)
https://www.androidfilehost.com/?fid=24531035584725320
* Marshmallow 6.0.1 Moto XT1225 radio/modem - TWRP FLASHABLE
BHB27 Radio_Flasher_Stock_MPGS24.107-70.2-2.zip
https://www.androidfilehost.com/?fid=457095661767122577

ChazzMatt said:
Boot into TWRP. Drag these files below over to your phone, preferably to the Download folder.
Flash the @bhb27 clear modem file (just in case), then re-flash your radio in TWRP. Reboot your phone.
* BHB27 Clean_modem_status.zip (CLEARS YOUR MODEM CACHE)
https://www.androidfilehost.com/?fid=24531035584725320
* Marshmallow 6.0.1 Moto XT1225 radio/modem - TWRP FLASHABLE
BHB27 Radio_Flasher_Stock_MPGS24.107-70.2-2.zip
https://www.androidfilehost.com/?fid=457095661767122577
Click to expand...
Click to collapse
Thanks a lot. My phone is up & running. Can this modem cause any problem, as mine is an Indian version moto maxx and this one is for Brazil?
Sent from my Moto MAXX using XDA-Developers Legacy app

Super_Commando said:
Thanks a lot. My phone is up & running. Can this modem cause any problem, as mine (Moto XT1225) is an Indian version moto maxx and this one is for Brazil?
Click to expand...
Click to collapse
No, all the Moto XT1225 radios are interchangeable. Should not cause any problems. All the XT1225 have the same FCC ID, same radio bands. The only reason the India XT1225 was called "Moto Turbo" instead of "Moto Maxx" is there was some carrier there in India called Max or Maxx, and Motorola didn't want any confusion this phone was in any way tied to them.
I live in the U.S.A. and my wife and I have Puerto Rico and Mexico Moto Maxx XT1225 phones. At one point in 2015, I flashed both to India "Moto Turbo" firmware 5.0.2. (including radio). When I did that, both phones even stated "Moto Turbo" in the "About Phone" section in Settings. (India XT1225 had Lollipop a month before the other XT1225, so that's why I did it -- to get official Lollipop.) Everything worked fine, of course.
Then months later, I flashed CM 12.1 custom ROM over both, and for awhile kept the India XT1225 radio on both the Puerto Rico and Mexico Moto XT1225.
Then, sometime in 2016 I flashed Puerto Rico Lollipop radio over both (including the "Mexico"), just to see if there was any difference. There wasn't. Now I have this same @bhb27 Brazil Marshmallow radio flashed on both, on RR 6.x. ROM -- because it was the easiest way to update to Marshmallow radio.
If you wish, at some point you can download and re-flash "India" Marshmallow radio files via fastboot. (There's no TWRP version I can find.) But you really won't see any difference...

BHB27 Clean Modem File
For anyone else reading this thread...
I keep both the BHB27 Clean_modem_status.zip and the Marshmallow Moto XT1225 Radio/Modem Zip file in my internal memory download folder permanently, since I flash ROM updates very often. (There's also TWRP version of the XT1254 Marshmallow modem for Droid Turbo owners.)
You shouldn't need the radio zip file every time, but the BHB27 Clean_modem_status.zip file is an amazing and very useful tool. Until @bhb27 coded that, several Quark owners were complaining about GPS issues when installing custom ROM. It did seem to affect Droid Turbo XT1254 owners more than XT1225, and it didn't affect everyone. But, it was still a constant discussion point. Lots of solutions were offered -- I found TopNTP app helped tremendously (and I still recommend installing that app -- just be sure to enable the "survive ROM flash" setting so you dont have to keep re-installing it after ROM updates.).
But the only guaranteed workaround -- prior to this file -- was found to be:
flash back to stock
get a GPS lock
made a backup
then install custom ROM
then restore modem
...or something like that. Forgive me if I don't remember all the details. It was a hassle, but that was the solution.
Then, people started sharing their "good" modem TWRP backup files (which already had a GPS lock), that other people could "restore" via TWRP. That's an excellent example of the XDA community helping each other, and was a quicker way of getting to the same point -- but still not ideal.
The issue was when flashing a new ROM on this phone, the modem sometimes became "confused". On the new ROM, GPS wouldn't work!
THEN, @bhb27 coded this amazing app, which clearly and simply "cleans" the older modem data out. It basically clears the cache of the modem. That may not be a technical explanation, but that's the best way to understand it. BOOM! It SOLVED all the GPS lock problems! :good: When flashing a new ROM on this phone, you should probably also flash this file.
Now, when newbies come into the threads and say "I can't get a GPS lock. Please Fix!" we just roll our eyes because they haven't bothered to do even a basic search of "GPS" in the thread. This is a 2-year old phone (actually released late 2014) and we've had custom ROMs since early 2015. Development is VERY mature on this phone. You don't think we've solved something as basic as GPS? Please.
I flash this file every time I do a ROM update, although it's probably not necessary. It doesn't hurt, and can help prevent any modem/radio issues.

Right on @ChazzMatt, I flash this .Zip file on my xt1250 on Verizon all the time, even just dirty flashing an update.
Of course, thanks to @bhb27 for its availability.

Edit. Wrong post. Sorry
Sent from my Moto MAXX using XDA-Developers Legacy app

Hello there, I'm having issues at the time I make a Phone call, signal is OK, Microhpone ok, Earphone Ok, but when I call someone I can't hear the one I'm calling an they also can't hear me, do you guys think it might be my Radio or Modem, Firstly I thought it was a hardware problem, but it's not, then I thought flashing a different ROM would solve this, but it seems nothing changed, my phone is unlocked both Bootloader and network, pls help

FinalbossMLG said:
Hello there, I'm having issues at the time I make a Phone call, signal is OK, Microhpone ok, Earphone Ok, but when I call someone I can't hear the one I'm calling an they also can't hear me, do you guys think it might be my Radio or Modem, Firstly I thought it was a hardware problem, but it's not, then I thought flashing a different ROM would solve this, but it seems nothing changed, my phone is unlocked both Bootloader and network, pls help
Click to expand...
Click to collapse
Try re-flashing the modem or even reflashing a different XT1225 modem. I've flashed Puerto Rico, India, and Brazil modems on my XT1225. They all work. Do NOT flash XT1225 modem over XT1254/XT1250. I'm assuming you have XT1225, as you don't really say.
If you open up a sound recording app, and record audio, does the microphone work then? I know it's not just a microphone problem, since you also can't hear the caller, but I'm just trying to think of any issues.
If you have TWRP, the TRWP-flashable Brazil XT1225 Marshmallow modem is listed in this thread. IF you need XT1254, I can point you to another location.

ChazzMatt said:
Try re-flashing the modem or even reflashing a different XT1225 modem. I've flashed Puerto Rico, India, and Brazil modems on my XT1225. They all work. Do NOT flash XT1225 modem over XT1254/XT1250. I'm assuming you have XT1225, as you don't really say.
If you open up a sound recording app, and record audio, does the microphone work then? I know it's not just a microphone problem, since you also can't hear the caller, but I'm just trying to think of any issues.
If you have TWRP, the TRWP-flashable Brazil XT1225 Marshmallow modem is listed in this thread. IF you need XT1254, I can point you to another location.
Click to expand...
Click to collapse
Yes I have XT1225, I'm from Mexico, guess it is mexican, and yeah, I can send voice notes in Telegram and everything is fine. So I just download the Modem .ZIP and flash it without WIPES and that's it or need another thing?

FinalbossMLG said:
Yes I have XT1225, I'm from Mexico, guess it is mexican, and yeah, I can send voice notes in Telegram and everything is fine. So I just download the Modem .ZIP and flash it without WIPES and that's it or need another thing?
Click to expand...
Click to collapse
Flash the clean modem file first. It's also in this thread, above. Then flash the modem. Flash both in TWRP.
ChazzMatt said:
Boot into TWRP.
While still in TWRP, flash the @bhb27 "clean modem" file (just in case), then re-flash your XT1225 radio. Reboot your phone.
* BHB27 Clean_modem_status.zip (CLEARS YOUR MODEM CACHE)
https://www.androidfilehost.com/?fid=24531035584725320
* Marshmallow 6.0.1 Moto XT1225 radio/modem - TWRP FLASHABLE
BHB27 Radio_Flasher_Stock_MPGS24.107-70.2-2.zip
https://www.androidfilehost.com/?fid=457095661767122577
Click to expand...
Click to collapse

ChazzMatt said:
Flash the clean modem file first. It's also in this thread, above. Then flash the modem. Flash both in TWRP.
Click to expand...
Click to collapse
Problem solved my friend, thank you so much for the helping I was thinking in taking it to technical service but now I don't have to worry any more
Again it is not working, it worked for a few hours, but today is the same I'm on MM RR what you recomend me to do, I really love this phone and do now want to change it

can i flash this clean modem status in "moto g5 plus",because i somehow accidently brick volte(with no imei) and my baseband version shows not found in boot loder,so can i flash this file in moto g5 plus .?

akshu2697 said:
can i flash this clean modem status in "moto g5 plus",because i somehow accidently brick volte(with no imei) and my baseband version shows not found in boot loder,so can i flash this file in moto g5 plus .?
Click to expand...
Click to collapse
Have you tried reflashing your modem?
The clean modem status was made by Quark dev @bhb27. I don't know if it works for other Motorola phones.

ChazzMatt said:
Have you tried reflashing your modem?
The clean modem status was made by Quark dev @bhb27. I don't know if it works for other Motorola phones.
Click to expand...
Click to collapse
thanks for your help ,
i managed to get my imei back,but problem is baseband version in softweare info is different and baseband version in bootloder manu is different(i can make call and able to use internet,but volte not working)if you have any idea can you suggest me.?

akshu2697 said:
thanks for your help ,
i managed to get my imei back,but problem is baseband version in softweare info is different and baseband version in bootloder manu is different(i can make call and able to use internet,but volte not working)if you have any idea can you suggest me.?
Click to expand...
Click to collapse
The only thing I can suggest is re-flashing stock image, then starting over if you want root or custom ROMs.
Sent from my official open market LG US998 V30+

1650-03 issues with 4G (B5, possibly B20 too) after 7.1.1 update

Folks, wanted to leave you guys a heads up that some of us are facing issues with the phone not picking up a 4G signal, or picking a signal but not connecting to mobile data or VoLTE after the update to NPL26.118-20
Here's a thread I created specific to India and Jio 4G with Band 5 (850Hz) in the official Lenovo support forum - https://forums.lenovo.com/t5/forums.../Moto_Z/highlight/false/page/1/thread-id/2624
Here's one more thread - https://forums.lenovo.com/t5/forums/v3_1/forumtopicpage/board-id/Moto_Z/thread-id/2668/page/1
Before you upgrade, use LTE Discovery app to ensure you're not in one of these regions with an affected LTE Band!

Update to the issue - my phone (running 7.1.1) is only trying to connect to Band 5 FDD-LTE in the location where I am at, but does not manage a LTE/ VoLTE signal or connects but drops/ does not connect after reboot. I used another XT1650-03 that is still running 7.0, which connects to Band 40 TDD-LTE (same exact location, same SIM used in both the devices). My service provider is known to utilize multiple LTE bands in the same location, but it is weird that 7.0 connects to Band 40 and works fine but 7.1.1 tries to connect only to Band 5 - that too without success.
I am roaming in a location where both Band 5 and Band 40 are available. 1650-03 with 7.0 connects to Band 40, but 7.1.1 insists on connecting to Band 5 but fails.

I have the same problem in austria.

gason74 said:
I have the same problem in austria.
Click to expand...
Click to collapse
Please post it in detail i n the Lenovo forum link from the first post of this thread. Let's make as much reports as we can there - we haven't seen any solution yet

RETUS Unit here
Only Band 3 works.
Everything else drops out.
(Been trying to downgrade to RETUS 7.0 ever since)

41LY45 said:
RETUS Unit here
Only Band 3 works.
Everything else drops out.
(Been trying to downgrade to RETUS 7.0 ever since)
Click to expand...
Click to collapse
There is no way to downgrade except for going in for replacement, and hope that the replacement device comes with 6.0.1 or 7.0, and not 7.1.1 - I tried this route with the Moto service already, and am thinking of going in for the replacement..

ph03n!x said:
There is no way to downgrade except for going in for replacement, and hope that the replacement device comes with 6.0.1 or 7.0, and not 7.1.1 - I tried this route with the Moto service already, and am thinking of going in for the replacement..
Click to expand...
Click to collapse
There are factory images available (for RETEU only 6.0.1 version is available), if i understand you correctly, downgrading by flashing the full ROM with mfastboot would not work properly...? I'm considering to just downgrade and wait for them to solve the issues with 7.1.1, since sending the device for repairs would be a hassle...

sheratan_b said:
There are factory images available (for RETEU only 6.0.1 version is available), if i understand you correctly, downgrading by flashing the full ROM with mfastboot would not work properly...? I'm considering to just downgrade and wait for them to solve the issues with 7.1.1, since sending the device for repairs would be a hassle...
Click to expand...
Click to collapse
It won't flash the boot, recovery, and system partitions (among others), and will tell you that you cannot downgrade.
I took mine to the service centre, and all they can do is reflash 7.1.1 - they cannot downgrade either, only option is replacement and hope the replaced device comes with 6.0.1 or 7.0

ph03n!x said:
It won't flash the boot, recovery, and system partitions (among others), and will tell you that you cannot downgrade.
I took mine to the service centre, and all they can do is reflash 7.1.1 - they cannot downgrade either, only option is replacement and hope the replaced device comes with 6.0.1 or 7.0
Click to expand...
Click to collapse
Have you tried flashing 7.0 on it? bullfinch110 suggested that the bootloader changed from 6.x to 7.x, that's why you can't downgrade, but flashing 7.0 should be fine. [link]
For you i suppose instead of the RETBR, you'd need some RETIN firmware.

sheratan_b said:
Have you tried flashing 7.0 on it? bullfinch110 suggested that the bootloader changed from 6.x to 7.x, that's why you can't downgrade, but flashing 7.0 should be fine. [link]
For you i suppose instead of the RETBR, you'd need some RETIN firmware.
Click to expand...
Click to collapse
I did not find the retin such image, think I tried the reteu 7.0, but it failed. Let me know if you're able to get it to downgrade - but have at least the 7.1.1 ota handy just in case. What I've found is that the modem will downgrade - and will probably fix the 4G issue, but WiFi won't work.

ph03n!x said:
There is no way to downgrade except for going in for replacement, and hope that the replacement device comes with 6.0.1 or 7.0, and not 7.1.1 - I tried this route with the Moto service already, and am thinking of going in for the replacement..
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I unlocked the bootloader + used RSDLite to flash the retus 7.0.
Warranties be damned if it's gonna have to be ship it across the world.

41LY45 said:
I unlocked the bootloader + used RSDLite to flash the retus 7.0.
Warranties be damned if it's gonna have to be ship it across the world.
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That's great.. now I need to find retin 7.0, couldn't find it anywhere

ph03n!x said:
That's great.. now I need to find retin 7.0, couldn't find it anywhere
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Click to collapse
I believe it shares software update line with REAPAC
At least according to this side:https://firmware.center/firmware/Motorola/Moto%20Z/Stock/XT1650-03/

Android 7.0 also missing LTE bands
Got my hands on an European Moto Z model xt1650-03 reteu, still on Android 7.0 with security patch of April 1st 2017, and am having LTE-reception limited to Band 1, 3 and 20, although provider and coverage indicate that band 5 and 8 also should be present.
In settings there is only 4g present, no enchanced 4g for LTE or Volte, although having activated those services through my provider (Vodafone CZ). The occasional 4+ is sometimes also showing.
Having read about the problems with the total loss of LTE for several users after upgrading to 7.1.1, I am very reluctant to make the jump before an eventual patch.
Any thoughts from other users with similar issues?
best regards,
mirrormurr, CZ
(posted this also in the lenovo-forum)

After being thrown back and forth between phone support and service center, I have figured out the solution on my own. Long story short, use Baseband (NON-HLOS.bin) version M8996_1258.42.03.11R SID for retin considering it fixes the Jio 4G roaming issue. M8996_1258.42.03.11R is from retcn (XT1650-05)
As of build NPL26.118-20-5-3 (Oct 2017 Security patch), my phone has a Baseband version of M8996_1239.53.01.0126.04.01R SID, which does not work with Jio 4G if it is roaming between different parts of the country that uses different LTE Bands.
M8996_1258.42.03.11R SID works just fine - Jio 4G VoLTE works in roaming, Wifi and BT works too. When I need to update (security updates or to check if Moto finally fixed the problem), I flash the full firmware for NPL26.118-20-5, get OTA updates that came after, check if they fixed the issue (which they haven't till now) and flash M8996_1258.42.03.11R SID NON-HLOS.bin so that I can use my phone.
I also have my wife's phone with a SIM from the same Jio 4G network (in roaming too) that I have kept at 7.0 without upgrading to 7.1.1, only to prove to Moto service that the phone itself is fine, and its the update to 7.1.1 that messed it up. Her phone running 7.0 has Baseband version M8996_1239.53.01.126R SID and works fine in stock form. If I flash this Baseband version on my 7.1.1, 4G and VoLTE will work, but Wifi breaks.
Both the phones are bootloader-locked (never been unlocked), and not modded in any way. If you need any technical detail/ experiments, let me know - I am doing all that I can without unlocking my bootloader anyway.

ph03n!x said:
use Baseband (NON-HLOS.bin) version M8996_1258.42.03.11R SID for retin considering it fixes the Jio 4G roaming issue. M8996_1258.42.03.11R is from retcn (XT1650-05)
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Click to collapse
How did you flash the retcn baseband to your retin model?

Benoe said:
How did you flash the retcn baseband to your retin model?
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Click to collapse
Code:
fastboot flash modem NON-HLOS.bin
Flashing the modem does not require an unlocked bootloader, so you can experiment with different modems - just make sure you are flashing modem versions from the different variants of XT1650, that's all.

September's 1+GB updated fixed most of the heating and LTE band issues.
You just have to fix the damage caused by the heating by replacing the batery.

41LY45 said:
September's 1+GB updated fixed most of the heating and LTE band issues.
You just have to fix the damage caused by the heating by replacing the batery.
Click to expand...
Click to collapse
Unfortunately, the update did not fix the Jio 4G roaming issue I'd described in the OP. And this is the only fix apart from staying with 7.0 that helps...

Finally, after almost 9 months of dealing with this problem, the retin update to OPL27.76-51 resolved the issue. The phone now readily latches on to Jio 4G when on roaming without me having to go through all the hassles I have been undergoing since I updated to 7.1.1.