Database Users

Modem file needed

Can any one provide the stock Single Sim modem file.I need to enable single sim in Dual sim

I have European xt1562
https://www.dropbox.com/s/zv8k5zqj2yo3qhw/modem.bin?dl=0

sjaakd said:
I have European xt1562
https://www.dropbox.com/s/zv8k5zqj2yo3qhw/modem.bin?dl=0
Click to expand...
Click to collapse
Is ur model single sim

anadarco7 said:
Is ur model single sim
Click to expand...
Click to collapse
Yes it is

sjaakd said:
Yes it is
Click to expand...
Click to collapse
Thanks

Make sure to backup and then erase the two modem data partitions as well. You can find the fastboot commands in the XML of the firmware packages.
Without behaviour might be not what you are looking for...

I worked for me thanks

Modem file for dual sim
Can anyone please share modem file for dual sim model as I've accidentally selected radio band as USA and hence won't get the network in sim slot 1. Also, if possible, please share link to a step by step tutorial as I'm a novice. Also plz tell me if flashing is possible without using a pc and will the warranty of the phone get void. A prompt response will be highly appreciated.
Thanks

I think Flashify can flash without an external device BUT having the OS (Android) running with all the options for locks and alarms would scare me.
I do _think_ that flashing original Motorola signed binaries will not void anything, to be more precise: With a locked bootloader such procedure should be impossible.
Before you flash a baseband (modem; for which we'd need your current version - see "my phone"), I would recommend just erasing modem setttings. I suspect this is where the modem config is permanently stored so erasing it should set this to default.
fastboot erase modemst1
fastboot erase modemst2
I would assume that after you boot, your device crashes once - so it does for me after flashing the modem. Happens when I make the first call. So just try calling your mailbox or something.
Again, I can't and I won't gurantee anything. You warranty is void!

Here's the version of baseband my phone has got.
tinypic.com/r/2ntb49c/9

I strongly suggest you try the fix above before going after this. This reflashes your modem which might be unnecessary.
fastboot flash modem NON-HLOS.bin
fastboot erase modemst1
fastboot erase modemst2
fastboot flash fsg fsg.mbn
The modem files are in the download, the ones you are looking for are in:
X_Play_France_Retail_XT1562_LPD23.118-10_CFC.xml.zip
See:
http://forum.xda-developers.com/moto-x-play/general/official-stock-firmwares-added-xt1562-t3195364
http://www.filefactory.com/file/e92ibmowiq5/X_Play_France_Retail_XT1562_LPD23.118-10_CFC.xml.zip

Thanks a lot, erasing the modems did it for me.
Many thanks mate.

Great. You can hit the "Thanks" button if you appreciate it.

I could fix my phone by erasing modems, after doing that I performed a factory reset, but now I've another problem. Installing apk files takes longer time than it would take earlier, does it have to do anything with the problem I was facing earlier?

That does not make sense - it just takes longer on the Moto X; I've experienced the same...

But it was pretty fast before doing the reset, I tried further resets, both hardware as well as software, but to no avail. The installation process is very slow, it took Facebook app atleast 5 minutes to install from apk file. Even installs from market take time and it's annoying.

See my other thread just posted. Assume this is because installs need to be converted from Dalvik to ART.
I know it was a lot faster under e.g. 4.4.2. But you sure it was also for any device with 5+?

I used this device for 2 days before messing up with radio band, i didn't face this problem during those 2 days and i used a Moto g3 for three months, didn't face this problem with that either. And it's dead slow, like currently my fb app is updating in background, it already has taken 12 minutes and is asking for another 3 minutes for a 45mb update.

I guess getting this phone replaced is the safest bet for me, as i have witnessed one more problem. When i keep the phone aside and pick it up after some time i see some strange coloured vertical lines on display at the right with rest of the screen being black. It gets right only when i lock and unlock the screen with power key. Any idea what it could be?

Hardware issue?! I would try and see what happens when you reflash it to full factory but that's of course only what I would do.

Moto X Play - No incoming calls, callers get 'busy' tone. No notifications either.

Hi, bought my daughter an X Play, October 2015. A few months ago we realised that whenever anyone tries to call the phone, they just get the 'busy' tone. Daughter also says notifications don't come through, and options have disappeared from the pull-down menu.
The phone makes outgoing calls with no problem, no problem browsing online, no problem with using Snapchat, Whatsapp etc, but she has to check for messages manually as she isn't receiving any notifications. As far as I can see, no option has been accidentally selected to turn notifications off.
Is this a known problem? If anyone can list the things I can try to make the phone fully functional again, it would be highly appreciated. We have not made any modifications to the phone at all, it's just the standard phone, not flashed any custom ROMS etc (I'm really not technically minded enough to do it if I wanted to!). Hope someone can help.
Many thanks, Andy.

I have similar problem,but people say that they call me normally.my phone doesnt ring or screen opens,or missed call appears anywhere.very weird.

Reboot > reset network settings > factory reset > reflash radio firmware > reflash whole firmware. If this doesn't help, there's 99% chance you've got hardware issue.

thanks.where can I find radio firmware?

kos25k said:
thanks.where can I find radio firmware?
Click to expand...
Click to collapse
You need to download the whole firmware. The NON-HLOS.bin file is for your radio. You also need to erase modem stats after flashing it. The fastboot commands are as follows:
Code:
fastboot flash modem NON-HLOS.bin
fastboot erase modemst1
fastboot erase modemst2

thanks.I will wait till new firmware with January OTA included,is ready for download,or someone creates a flashable rom and then I will do this.

minimale_ldz said:
Reboot > reset network settings > factory reset > reflash radio firmware > reflash whole firmware. If this doesn't help, there's 99% chance you've got hardware issue.
Click to expand...
Click to collapse
Many thanks for responding. I've never flashed or reflashed anything, so I think this is something beyond my capability. I have some techie friends who I'm sure can help with this though. If it needs anything doing to it beyond changing some settings, clearing the cache, or factory reset, I don't have a clue! But at least now I have some info I can show a friend when I ask them to see if they can sort it for me, in return for booze. It seems to be the currency of my techie mates.
Thanks again for the info.

kos25k said:
thanks.I will wait till new firmware with January OTA included,is ready for download,or someone creates a flashable rom and then I will do this.
Click to expand...
Click to collapse
You can clear modemstats without firmware, it helps sometimes. Just execute
Code:
fastboot erase modemst1
fastboot erase modemst2
And roms are very unlikely to contain radio files. They usually have system and kernel only.
---------- Post added at 18:54 ---------- Previous post was at 18:45 ----------
77andyb said:
Many thanks for responding. I've never flashed or reflashed anything, so I think this is something beyond my capability. I have some techie friends who I'm sure can help with this though. If it needs anything doing to it beyond changing some settings, clearing the cache, or factory reset, I don't have a clue! But at least now I have some info I can show a friend when I ask them to see if they can sort it for me, in return for booze. It seems to be the currency of my techie mates.
Thanks again for the info.
Click to expand...
Click to collapse
No prob. What you can also try yourself is dialing
Code:
*#*#4636#*#*
This will open Testing menu. In Phone information section you can set preferred network type and check the following settings:
GSM only
WCDMA only
LTE only
(2G, 3G, 4G respectively) and see if your problem persists on all types of network. It could be that your phone will work normally on 2G but not on 3G for some reason, so it's still usable. If you change these settings they will persist until reboot.
BTW: is your Home button working?

if we clear modemstats is safe?I mean we do this with commands and then just reboot?

kos25k said:
if we clear modemstats is safe?I mean we do this with commands and then just reboot?
Click to expand...
Click to collapse
should be ok. some say it's better to remove sim card when you do it, but I never've seen explanation why exactly.

ok thanks i'll try.can u also remind me the process to make these commands?I have forgotten the process!

kos25k said:
ok thanks i'll try.can u also remind me the process to make these commands?I have forgotten the process!
Click to expand...
Click to collapse
The process is the same as when you flash firmware in fastboot, so you need pc with motorola drivers and fastboot software, you then boot your phone in fastboot mode (bootloader) and enter two commands:
Code:
fastboot erase modemst1
fastboot erase modemst2

thanks dude.I think I press and hold vol down while power up..but if I wait to flash the new upcoming rom...shouldnt be the same as I would flash the modem?I confused a little sorry,because you said roms doesnt contain radios...just system and kernel files.

kos25k said:
thanks dude.I think I press and hold vol down while power up..but if I wait to flash the new upcoming rom...shouldnt be the same as I would flash the modem?I confused a little sorry,because you said roms doesnt contain radios...just system and kernel files.
Click to expand...
Click to collapse
Yes, just turn off the phone and then powe and volume down and you're in fastboot mode.
and for the second thing - firmware is everything - system, kernel, modem, recovery, bootloader and all the other stuff and that's what you flash in fastboot. Rom is just system+kernel we flash in TWRP.

77andyb said:
Hi, bought my daughter an X Play, October 2015. A few months ago we realised that whenever anyone tries to call the phone, they just get the 'busy' tone. Daughter also says notifications don't come through, and options have disappeared from the pull-down menu.
The phone makes outgoing calls with no problem, no problem browsing online, no problem with using Snapchat, Whatsapp etc, but she has to check for messages manually as she isn't receiving any notifications. As far as I can see, no option has been accidentally selected to turn notifications off.
Is this a known problem? If anyone can list the things I can try to make the phone fully functional again, it would be highly appreciated. We have not made any modifications to the phone at all, it's just the standard phone, not flashed any custom ROMS etc (I'm really not technically minded enough to do it if I wanted to!). Hope someone can help.
Many thanks, Andy.
Click to expand...
Click to collapse
I had this issue. Reflash the rom or install a custom rom. This isn't a hardware bug, simply another unexplained weird android bug

minimale_ldz said:
Yes, just turn off the phone and then powe and volume down and you're in fastboot mode.
and for the second thing - firmware is everything - system, kernel, modem, recovery, bootloader and all the other stuff and that's what you flash in fastboot. Rom is just system+kernel we flash in TWRP.
Click to expand...
Click to collapse
really??I thought flashable roms are same as u flash rom with commands from pc!!!! ???

minimale_ldz said:
You can clear modemstats without firmware, it helps sometimes. Just execute
Code:
fastboot erase modemst1
fastboot erase modemst2
And roms are very unlikely to contain radio files. They usually have system and kernel only.
---------- Post added at 18:54 ---------- Previous post was at 18:45 ----------
No prob. What you can also try yourself is dialing
Code:
*#*#4636#*#*
This will open Testing menu. In Phone information section you can set preferred network type and check the following settings:
GSM only
WCDMA only
LTE only
(2G, 3G, 4G respectively) and see if your problem persists on all types of network. It could be that your phone will work normally on 2G but not on 3G for some reason, so it's still usable. If you change these settings they will persist until reboot.
BTW: is your Home button working?
Click to expand...
Click to collapse
Hi, no, the Home button isn't working. I'll run through the tests you've suggested but I think I need to put a SIM card in, as my daughter removed it to put into her new iPhone Not my decision, all down to mother... think I have a spare PAYG SIM around the house I can use though. Thanks for the suggestions.

77andyb said:
Hi, no, the Home button isn't working. I'll run through the tests you've suggested but I think I need to put a SIM card in, as my daughter removed it to put into her new iPhone Not my decision, all down to mother... think I have a spare PAYG SIM around the house I can use though. Thanks for the suggestions.
Click to expand...
Click to collapse
Don't bother the tests. If Home button is not working then your phone went into setup mode, it's a software bug and you can fix it yourself.
1. get Activity Launcher from Play Store
2. find Setup Wizard on the list of All Activities
3. launch com.google.android.setupwizard.SetupExit activity
Your phone should be back to normal.

minimale_ldz said:
Don't bother the tests. If Home button is not working then your phone went into setup mode, it's a software bug and you can fix it yourself.
1. get Activity Launcher from Play Store
2. find Setup Wizard on the list of All Activities
3. launch com.google.android.setupwizard.SetupExit activity
Your phone should be back to normal.
Click to expand...
Click to collapse
I think it is!!! home button works, notifications showing, pull down toolbar shows all options, this really seems to have sorted it! I need to test with a SIM inserted, but whatever the hell you told me to do, seems to have worked....thanks so much! We now have a very useful spare Smartphone. I'll comment again once I've done a full test with SIM inserted etc, let you know if it really is all good. Cheers for now! Andy.

hello again.I reflashed firmware with pc commands.it seems that I have the issue again.my phone doesnt ring at all!which commands can I execute without reflashing again the whole firmware??thanks.

No Service with Sim Card Inserted

A few days I woke up with no service on the Nexus 6p. This was a few days after updating to the latest oreo build. Sim card seems detected because when I take it out another message shows up "No SIM card - No service", and when I put it back it only shows "No service". Tried putting the card in a Nexus 5X and it works fine.
Tried the following with nothing working so far:
- Switching 2G/3G/LTE and rebooting in between.
- *#*#4636#*#* and turning off the radio, switching between the different options of GSM/LTE/etc...
- Restoring a working nandroid backup
- Reflashing different ROMs
- Factory reset
- Factory reset then flashing ROMs
- Wiping cache and dalvik
- efs fix in twrp
Hardware version ANGLER-VN2
IMEI shows up under IMEI information tab but not under SIM Status tab, there it shows not available.
I live in Ontario Canada, carrier is Freedom mobile.
So now I'm stuck, tried calling google and hwawei and they won't do an RMA because my warranty is expired.
Anyone has any ideas to try?
Thanks in advance.

Not that this is going to help, but this has GOT to be an Oreo issue, myself as well as at least 4 others that I have seen has been getting the No service, or No Sim, mine did the No Sim, then started bootlooping.
---------- Post added at 07:36 AM ---------- Previous post was at 07:06 AM ----------
https://www.theandroidsoul.com/fix-...d-wifibluetooth-issues-restoring-twrp-backup/

No this has nothing to do with O.
Which version phone do you have? H1511 or H1512?
What country are you in now?
What is your carrier? If MVNO state that.
Are your IMEI and phone numbers showing up in settings?
Everyone, please put the most basic information in your profile like where you live, which carrier you are currently on, and maybe even which variant of your phone.

I updated the first post with more info. How do I tell if I have H1511 or H1512? I bought it from the google store in Canada.

More information is good. Please update your XDA profile so the next person trying to help can check there first. You can find the device variant by booting to bootloader (not recovery) and using the vol toggle to navigate to "Barcodes". IMEI should show up there too. Date of manufacture, Serial #, etc. I think you should have started a normal thead, not Q/A, BUT your IMEI and a lot of other information should be showing up under SIM info. That's a problem. Second, you say you did the EFS fix in TWRP. Can you explain how you did this? Did you use one of YOUR OWN TWRP backups which contained the modemst1,modemst2 and restored ONLY those two partitions to your device? Did you receive any confirmation or error? Have you tried using a SIM from a Rogers or Telus in your phone to see if the SIM info shows up?

Thanks for the help, I'll update my profile with this info as well.
in the bootloader the IMEI shows up along with the rest of the info. It's a H1511 device.
The EFS fix is by following this: https://www.theandroidsoul.com/fix-empty-imei-corrupted-efs-no-sim-unknown-baseband-wifibluetooth-issues-restoring-twrp-backup/
is modemst1 and 2 contained in the twrp backup? and if so how do I restore it? in restore options there's system, data, vendor and boot only. I guess it's an option in the backup that I haven't selected?
I tried another SIM also from freedom and it didn't work. I don't have a Rogers or other SIM to try currently.

Right, so if you didn't ever select the EFS partitions when using TWRP Backup, you never backed them up so under Restore they don't show up (so you can't use that method). You can however use TWRP terminal or fastboot to wipe those and reboot. I would be sure to try at least one SIM from either Rogers or Telus. If that doesn't work, then wipe the EFS partitions and let them rebuild (hopefully).

Definitely Oreo issue. Google messed with something and it broke data for many people. I have been troubleshooting this for the last week (Verizon, US, fully stock 6P) and finally found a thread where a Google rep acknowledged the problem and said it was high priority for a fix.

I wish you luck with that one @LucJoe. This has been happening for the past 2 years from MM, N, and now O...and XDA is full of threads (just look). So you just go ahead and wait for Google to fix it for you, LOL. - Not a new issue related to O.

Never happened to me before updating. The data issues manifest differently across different carriers but for some reason Oreo likes to play it safe and disconnect data. I have not been able to get LTE for more than a couple seconds, but will get slow unstable 3G occasionally. Google confirmed the issue here: https://productforums.google.com/forum/#!msg/phone-by-google/kw3ZcXd1BVs/7HYuANdoAgAJ

A recent success using terminal from TWRP (or the OS if you are rooted). You can also use fastboot to do the same thing using the commands in the article posted in this Q/A (method 2). Good luck! See thread here.

This seems like it's a different issue described in that thread. I'm not running out of data, there's no service and no connection of at all to any network.

I did find that and try it before posting here. It did nothing to fix the problem. It did say that something was copied over '4 MB copied, at 14.3 MB/s' something like that but nothing changed.

I also have the same issue. Have tried everything including going back to stock 7.1.2 & locking the bootloader. Nothing seems to work. Interestingly, when i pull up the hidden phone diagnostic menu, it shows all cell measurement info which means that the antenna is receiving signals but the phone somehow is not registered on the network?

I can wipe those partitions with fastboot but is it safe? I have never used TWRP and my problems started after updating to Oreo. Is there a chance the official OTA could corrupt those partitions?

@LucJoe- That fix is not for you. That is for users who have no IMEI or phone number under About Phone>>SIM info. Your issue (as I understand it) is a weak and intermittent signal that keeps disconnecting LTE and sounds like a carrier or SIM issue. Why not go get a new SIM provisioned for your phone. That or pop somebody else's SIM in your phone and see if you get a different outcome.

Yes that was my first thought as well. I got a new SIM, then another one. So 3 SIMs now with the same result. I've been on the phone with so many techs from Verizon/Total Wireless and none of them have any answers. If I put the same SIMs into a Moto E4 I picked up for testing, it works fine. But the 6P immediately disconnects from LTE then bounces between 3G/1X.
My next test is to try a SIM from a different network I guess... maybe Verizon is blocking my 6P. Or maybe my LTE radio is damaged somehow.

So I did this using TWRP but wasn't sure if it actually went through or not. I did it now through adb from pc and also fastboot and it says permission denied. Any idea how to bypass that?

Suddenly no signal in any rom

Hello, yesterday I was trying latest Lineageos16 by @codeworkx and was trying the network options. I selected "GMS/WCDMA/LTE" and since then I cant get any network like if my RIL was broken or something. I tried:
Rebooting the phone
Put airplane mode
Installing 20s firmware again (previously it was already installed)
Coming back to LOS15
Installing a stock rom via fastboot
And the problem is still there, my sim is detected in all roms but I cant get any signal. I need help since I don´t know what to do now.

Gadrok said:
Hello, yesterday I was trying latest Lineageos16 by @codeworkx and was trying the network options. I selected "GMS/WCDMA/LTE" and since then I cant get any network like if my RIL was broken or something. I tried:
Rebooting the phone
Put airplane mode
Installing 20s firmware again (previously it was already installed)
Coming back to LOS15
Installing a stock rom via fastboot
And the problem is still there, my sim is detected in all roms but I cant get any signal. I need help since I don´t know what to do now.
Click to expand...
Click to collapse
I got your PM. But, I don't know which phone you have. As a last resort you can flash my recovery or flash the EFS from my old X727 ( if you have an X727 or X720)
There are several things things that could cause this issue, so I have provided several things to try
If you have tried several Roms, I am betting that you probably wiped but did not format your storage?
FYI Encryption can cause these kinds of issues. I have seen these issues caused by Google as well, and once the account has been restored the sim card will start working again.
Follow the very basic steps below and if that doesn't work, you can try last resort steps that are more drastic and could cause the issue to become unrecoverable. So avoid doing things such as wiping your modems etc. or flashing alternate efs files until you have exhausted all of the possible ways to repair.
Dial *#*#4636#*#* in the dialer
Navigate to Device/Phone Information
Click on “Run Ping Test “
After the Ping test is performed
Click on “Turn Off Radio“
Next, Click on “Turn on SMS over IMS“
No Changes Next >
First try changing to global and then check and make sure that the correct APN is selected under Network&Internet> Mobile Network> Advanced > Preferred Network Type > Choose Global
Next go to Network&Internet> Mobile Network> Advanced >Access Point Names > Choose your correct Network. > If your APN is not listed, enter it manually, click save, then choose new entry.
Go to Network&Internet> Mobile Network> System Select > Should be Automatic
Go to Network&Internet> Mobile Network> CDMA subscription > Should be RUIM/SIM
Check for Signal : If no signal install program from play store called Network Discovery, read instructions and follow suggestions. Usually this program alone will resolve these types of issues ( the free version works fine)
If it does not work Remove the Sim > Wipe sim card off with lint free cloth , ensure that there is no damage to the sim card, Now Reboot > Should work.
No Changes Next >
Start Clean, including formatting storage ( Not WIPE!) Format type yes, Reboot to Recovery then do a full clean wipe.
Reinstall Rom, Gapps, Root > Take out the sim card and setup the phone, Reboot to Recovery, Reinsert Sim card, and boot to system, Open Playstore check for updates.
No Changes Next >
Trying flashing my EFS files from here:
https://forum.xda-developers.com/showpost.php?p=75021582 See Section titled EFS.
If that doe's not work try restoring the recovery, its efs is from a phone that I returned to Amazon. ( so its an alternate EFS)
Last resort
I am not going to tell you this one yet because it can cause a permanent problem. Try everything that I listed above it all else fails you can try the most drastic steps. Which could finally solve your issues but also make the issue worse in a worst case scenario.

tsongming said:
I got your PM. But, I don't know which phone you have. As a last resort you can flash my recovery or flash the EFS from my old X727 ( if you have an X727 or X720)
There are several things things that could cause this issue, so I have provided several things to try
If you have tried several Roms, I am betting that you probably wiped but did not format your storage?
FYI Encryption can cause these kinds of issues. I have seen these issues caused by Google as well, and once the account has been restored the sim card will start working again.
Follow the very basic steps below and if that doesn't work, you can try last resort steps that are more drastic and could cause the issue to become unrecoverable. So avoid doing things such as wiping your modems etc. or flashing alternate efs files until you have exhausted all of the possible ways to repair.
Dial *#*#4636#*#* in the dialer
Navigate to Device/Phone Information
Click on “Run Ping Test “
After the Ping test is performed
Click on “Turn Off Radio“
Next, Click on “Turn on SMS over IMS“
No Changes Next >
First try changing to global and then check and make sure that the correct APN is selected under Network&Internet> Mobile Network> Advanced > Preferred Network Type > Choose Global
Next go to Network&Internet> Mobile Network> Advanced >Access Point Names > Choose your correct Network. > If your APN is not listed, enter it manually, click save, then choose new entry.
Go to Network&Internet> Mobile Network> System Select > Should be Automatic
Go to Network&Internet> Mobile Network> CDMA subscription > Should be RUIM/SIM
Check for Signal : If no signal install program from play store called Network Discovery, read instructions and follow suggestions. Usually this program alone will resolve these types of issues ( the free version works fine)
If it does not work Remove the Sim > Wipe sim card off with lint free cloth , ensure that there is no damage to the sim card, Now Reboot > Should work.
No Changes Next >
Start Clean, including formatting storage ( Not WIPE!) Format type yes, Reboot to Recovery then do a full clean wipe.
Reinstall Rom, Gapps, Root > Take out the sim card and setup the phone, Reboot to Recovery, Reinsert Sim card, and boot to system, Open Playstore check for updates.
No Changes Next >
Trying flashing my EFS files from here:
https://forum.xda-developers.com/showpost.php?p=75021582 See Section titled EFS.
If that doe's not work try restoring the recovery, its efs is from a phone that I returned to Amazon. ( so its an alternate EFS)
Last resort
I am not going to tell you this one yet because it can cause a permanent problem. Try everything that I listed above it all else fails you can try the most drastic steps. Which could finally solve your issues but also make the issue worse in a worst case scenario.
Click to expand...
Click to collapse
Ok, first of all thanks for that deatailed guide. Unfortunately I sadly need the last resort and how to do it.

Gadrok said:
Ok, first of all thanks for that deatailed guide. Unfortunately I sadly need the last resort and how to do it.
Click to expand...
Click to collapse
Seriously ?
Okay, here is my two second answer : Use QPST
Edit:
Basically at your risk delete your modems via adb
First make sure that you have your own efs backup by using TWRP > Backup. Next wipe your modems
Boot into fastboot
1. adb reboot bootloader
2. fastboot erase modemst1
3. fastboot erase modemst2
4. fastboot erase cache
5. fastboot reboot ( Check for signal in system > if no go to link below.
You didn't spend anytime telling me about what phone you have, what you have actually tried etc.. I don't have time or the motivation to write easy to understand step by steps.
Thankfully someone has provided the steps already:
1. Use Chrome Browser on your desktop with the Google Translate extension installed and activated.
2. Follow the instruction listed on 4PDA here: http://4pda.ru/forum/index.php?showtopic=876414&view=findpost&p=72854643

Edit 2
You could also just wait for next Lineage update. Although, I am not experiencing any issues apparently other people are dealing with issues also. The next update may solve it. If possible wait before doing the drastic steps mentioned above.
Sent from my LEX727 using XDA Labs

@tsongming Currently I am experiencing almost the same problem. I just bought Le Pro3 US version (x727) a couple weeks ago. It came with US 18s firmware if I am not mistaken. Then I upgraded to Chinese firmware 26s, unlocked the boot loader and installed TWRP. So now I have the x720 baseband. After that I played around with several ROM, AICP 14.0 and LOS 16.0 without any problem.
Two days ago I installed LOS 16.0 4 March nightly build. Everything mostly work and I got LTE connection. Suddenly yesterday morning, when I was at home I noticed the phone just has H+. Restarting the phone didn't help. So I just went to office using train. In the train, I realized it changed back to LTE. I played with the phone and suddenly it changed back to H+. So I changed the setting to LTE only but it didn't help. Restarting the phone also didn't help. So currently my phone stuck with H+.
I have tried several things:
1. Flash the x720 firmware
2. Flash AICP 14.0 official
3. Reformat internal storage and full wipe other partitions as you mentioned above and flash LOS 16.0 5 march nightly
All failed to solve the problem.
Currently I am thinking to flash the original 26S Chinese version back. In your opinion, will it help?

VoLTE - How to restore from persist.img?!

I kinda messed up! The camera in my wife's Pixel Experience 10 ROM was not working and I thought I'll install another ROM and check. Using TWRP, I tried a couple of ROMs by formatting system, cache and dalvik (not data as I was testing). However, I forgot to take EFS + Persist backup!
Now, I could not get a network (VoLTE or otherwise) which was working fine before. I was scared thinking I might have bricked the device but I saw a backup of a persist image in my TWRP folder (backup_[data]_persist.img). Phew! I guess I had taken the backup when I initially installed the PE ROM and used it to get VoLTE afterwards.
As I still have IMEI intact for both the SIMs, I thought of restoring the persist.img. But I am unable to figure out how to do so! I tried restoring it to the system partition and that overwrites the OS. Can someone please help me do this correctly? I have searched XDA and Google but I did not get a proper solution. I will really appreciate it. TIA.
Update: Issue resolved! Somehow VoLTE started working. So, I just took a normal EFS + Persist backup using TWRP.

abhi.eternal said:
I kinda messed up! The camera in my wife's Pixel Experience 10 ROM was not working and I thought I'll install another ROM and check. Using TWRP, I tried a couple of ROMs by formatting system, cache and dalvik (not data as I was testing). However, I forgot to take EFS + Persist backup!
Now, I could not get a network (VoLTE or otherwise) which was working fine before. I was scared thinking I might have bricked the device but I saw a backup of a persist image in my TWRP folder (backup_[data]_persist.img). Phew! I guess I had taken the backup when I initially installed the PE ROM and used it to get VoLTE afterwards.
As I still have IMEI intact for both the SIMs, I thought of restoring the persist.img. But I am unable to figure out how to do so! I tried restoring it to the system partition and that overwrites the OS. Can someone please help me do this correctly? I have searched XDA and Google but I did not get a proper solution. I will really appreciate it. TIA.
Click to expand...
Click to collapse
Actually it won't cause any issue for restoration of presist, but if you want to double sure take a backup of EFS and persist with this command.
Code:
Use the following command to create a backup and save it at /sdcard/persist.img:
dd if=/dev/block/bootdevice/by-name/persist of=/sdcard/persist.img
To restore use the following command:
dd if=/sdcard/persist.img of=/dev/block/bootdevice/by-name/persist
If you have saved a backup using different name then use that name instead.

riyan65 said:
Actually it won't cause any issue for restoration of presist, but if you want to double sure take a backup of EFS and persist with this command.
Code:
Use the following command to create a backup and save it at /sdcard/persist.img:
dd if=/dev/block/bootdevice/by-name/persist of=/sdcard/persist.img
To restore use the following command:
dd if=/sdcard/persist.img of=/dev/block/bootdevice/by-name/persist
If you have saved a backup using different name then use that name instead.
Click to expand...
Click to collapse
Thank you. However, before I could try this, somehow VoLTE started working. So, I just took a normal EFS + Persist backup using TWRP. This might come in handy in future or for someone else though. Cheers!

abhi.eternal said:
Actually it won't cause any issue for restoration of presist, but if you want to double sure take a backup of EFS and persist with this command.
Thank you. However, before I could try this, somehow VoLTE started working. So, I just took a normal EFS + Persist backup using TWRP. This might come in handy in future or for someone else though. Cheers!
Click to expand...
Click to collapse
I did not backup EFS & Persist since I never knew it might be required in future. Now my LTE, Volte, wifi calling functions are not working, also the IMS status says "not registered". What solution will you suggest? Also, can EFS & persist backup of another Moto g5 plus be used? If so, can you share yours.

yudhi3109 said:
I did not backup EFS & Persist since I never knew it might be required in future. Now my LTE, Volte, wifi calling functions are not working, also the IMS status says "not registered". What solution will you suggest? Also, can EFS & persist backup of another Moto g5 plus be used? If so, can you share yours.
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Click to collapse
Never flash someone else persist, doing that just make your device mess. And please provide some more information, like which ROM? How it happened?

riyan65 said:
Never flash someone else persist, doing that just make your device mess. And please provide some more information, like which ROM? How it happened?
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I was on untouched stock Oreo 8.1 and clean flashed Pixel Experience 10 rom using twrp & nothing else. Now on PE 10 rom, I have issues with Volte, Lte/4G & wifi calling, IMS status(not registered), however I have my IMEI no intact. LTE/4g sign keeps blinking i.e doesn't remain stable, I tried 4g Jio and airtel 4g sims, unable to make/receive calls or even use data. While all services with BSNL sim which uses H/H+ signal works fine.

yudhi3109 said:
I was on untouched stock Oreo 8.1 and clean flashed Pixel Experience 10 rom using twrp & nothing else. Now on PE 10 rom, I have issues with Volte, Lte/4G & wifi calling, IMS status(not registered), however I have my IMEI no intact. LTE/4g sign keeps blinking i.e doesn't remain stable, I tried 4g Jio and airtel 4g sims, unable to make/receive calls or even use data. While all services with BSNL sim which uses H/H+ signal works fine.
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Click to collapse
Do you try checking APNs in setting for Airtel and Jio?

riyan65 said:
Do you try checking APNs in setting for Airtel and Jio?
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Click to collapse
The APNs are default and looks ok for 4g connectivity, however plz share me any specific changes in APN for 4G sims for my type of issue. (Currently it seems 4G services are not working at all even though the sims are able to catch LTE/4G network.)

riyan65 said:
Do you try checking APNs in setting for Airtel and Jio?
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Click to collapse
After many trials, I found that the problem is only with Jio sim(all other sims are working fine and I am able to use all services Volte, lte, data & calling). While with Jio, now I am able to use its 4G data service, but unable to make/receive calls & SMS.

yudhi3109 said:
After many trials, I found that the problem is only with Jio sim(all other sims are working fine and I am able to use all services Volte, lte, data & calling). While with Jio, now I am able to use its 4G data service, but unable to make/receive calls & SMS.
Click to expand...
Click to collapse
So, now you need to install stock ROM, get the volte working on stock then take a backup of EFS and persist in stock. Install custom ROM and check if Jio sim working, if not, restore the backup of EFS and persist. Jio sim will start working.