Hello everyone.
I recently attempted to install a custom kernel (ElementalX) on my Nexus 5 D820. During this process, I encountered a bootloop while installing TWRP, which is probably the event that has caused the nightmare my phone has been in the past few weeks. Essentially, ever since then, LTE has not been working on my phone, and the rest of the cellular connectivity has been quite bad. Actually, LTE does work, but only for about 10 minutes. After this, if it is turned on, it will crash ALL cellular connectivity, including phone calls and texts, until I turn it off.
Initially, I believed that the custom kernel was the cause. I therefore flashed stock ROM back, thinking it would solve the problem (spoiler alert: it didn't). I then tried flashing many different stock ROMs, from KitKat to Lollipop and pretty much any variety of Marshmallow offered. This still didn't fix the problem. After this, I tried flashing individual radios from http://forum.xda-developers.com/goo...t/modem-nexus-5-flashable-modems-efs-t2514095, which still did not fix the problem.
I then realized that the problem wasn't in any of the files normally affected by flashing a new ROM and started reading up on the EFS partition. From what I can gather so far on my phone, I believe that I have a slightly corrupted EFS partition and that this is causing the stability issues on my phone. I tried restoring from a good qcn file as suggested here http://forum.xda-developers.com/goo...efs-backup-t2769023/post60421668#post60421668 and that has still not fixed my problem. I tried about 4 or 5 different qcn files, restoring in different order, wiping the block partitions like suggested here http://forum.xda-developers.com/lg-g3/general/request-3g-2g-lte-d850-t3300908 and that still didn't work.
But I didn't give up just there! I read from this post http://forum.xda-developers.com/galaxy-s5/general/how-to-add-rf-lte-frequency-bands-to-t2886059 that you could edit NV items individually and figured that maybe I could try to edit the LTE NV items to their default values. Turns out, they were at their default values and they are fine.
At this point, I thought I had tried everything, but while attempting an NV item backup using Qualcomm NV Tools in EFS professional, I noticed an odd error that kept happening. All of the NV items would back up properly, BUT, the backup process would crash for NV items 33799 to 33802 and 33810 to 33812, every time, no matter what. Also, exactly when I tried reading these NV items, the phone cellular network goes down for about 10 seconds, as it normally does when LTE is activated. I therefore believe that these NV items may be corrupt and that cellular network stops working whenever they are read, which for some reason only occurs when LTE is turned on (I'm far from an expert in this field, correct me if what I'm saying makes no sense).
At this point, I've pretty much given up on fixing the phone, but thought I would reach out to xda-devs to see if anyone had any experience with this. Not having LTE is not a huge deal, but I would be quite happy if I could bring it back.
What I'm asking: If anybody with a Nexus 5 D820 could try doing an NV Backup using Qualcomm NV Tools and see if NV items 33799 to 33802 and 33810 to 33812 crash their phone, that would be much appreciated. If I know at least that this is a problem unique to my phone, it can point me in the right direction. On the other hand, if it's widespread across Nexus 5 devices, my problem may be something else completely.
What I'd really, really, really appreciate: If a kind soul could give me a full EFS backup of their working phone, I would be extremely grateful. I'm pretty sure that this would fix all my problems, and I would be forever grateful to the kind person that does this. Of course, you may wipe your ESN/MEID/IMEI before sending the file.
tl;dr
LTE doesn't work since flashing kernel. Probably corrupt EFS partition. If some can check if NV items 33799 to 33802 and 33810 to 33812 can be backed up on Qualcomm NV Tools, that would be great. If someone can send me a full EFS backup of their Nexus 5, that would be amazing.
I dont know if it is still relevant for you but i got the same issue..
I got two Nexus 5 D821 (dont ask why two of them )
Wanted to move a full backup from the first one to the second...
I didnt know about the efs partition and what it is so i also told twrp to backup it from my first device too... and restoring it on the second device screwed my imei (showed 0)...
SO DO NOT BACKUP EFS ON ONE PHONE AND MOVE WITH IT TO ANOTHER ONE!!!! EVEN IF IT IS THE SAME PHONE TYPE!!!!
I managed to get my imei back somehow with editing NV items, restoring backups from QPST files and so on... (Worked at least 20 hours so far)
The only advantage that I have is that the first phone i came from is still untouched on his efs, so i try to backup the nv data and got the same errors as you!
I am currently working on this and got the same errors backing up nv items from the untouched nexus...
So probably thats not the problem, just skip these values and try to restore the nv as parts
If you need the nv backups you can contact me at [email protected]
Perhaps I am able to help
Brother, did you solve the problem?
Related
Hey everyone here at XDA, just wanted to share my recent experience with loosing my phone service after flashing MIUI from the clockwork rom manager app. Basically, i flashed the rom from within the rom manager app and really liked the rom until I noticed that I had lost data and phone service. Apparently I was stuck in roaming, with a little triangle replacing the 4g icon in the notification bar at the top of the screen. I did a bunch of searching through forums and everyone who was having this issue was having it due to the loss of there IMEI. The people afflicted by loss of service did not have the correct IMEI or any at all on their phone.
But my IMEI was there and it was correct. So I restored the nandroid backup I made at the time of flashing MIUI but that didn't solve the issue so I restored the backup I made when I originally rooted my phone and installed CWM. That still didn't fix it. Some forum posts were saying the SIM card might have been fried, some were saying that they had totally lost the ERI folder, or something... I was getting worried. The last thing I tried was flashing a stock 4.1.1 rom via Odin and still I had no service. Well I needed a phone for work so I went on the VZW site Monday morning and switched my service to an old blackberry storm (I know, right?) that I had laying around and went to work. When I got home I looked on the web some more and found info about accessing the hidden menu with a code that wipes all data and settings. Is this different than the factory wipe from the settings menu? Anyway I wiped via the hidden menu and after that the little roaming triangle was gone. I switched my service back to the Gs3, which involved taking out the SIM card and registering it again, and after that my service, data, and 4g icon was back. Problem solved. I am wondering though if I could have used the hidden menu/wipe feature from MIUI, and for that matter what caused my phone to get stuck in roaming?
I would like to root, and explore other roms but now I'm worried about this happening again. It doesn't help that someone told me service providers can deny service for rooting your phone. I don't know if that's true or not. I know now that I should make a IMEI backup, even though I don't think that was my problem. I recently took the ota and am back on stock 4.1.2. Just wanted to share this with everyone, and bounce it around to see if anyone has any ideas, and maybe this could help someone who is having the same issue. As far as the hidden menu and wipe code, I don't remember what it was but you could look it up if you need to try it.
Thanks everyone
mattunden said:
Hey everyone here at XDA, just wanted to share my recent experience with loosing my phone service after flashing MIUI from the clockwork rom manager app. Basically, i flashed the rom from within the rom manager app and really liked the rom until I noticed that I had lost data and phone service. Apparently I was stuck in roaming, with a little triangle replacing the 4g icon in the notification bar at the top of the screen. I did a bunch of searching through forums and everyone who was having this issue was having it due to the loss of there IMEI. The people afflicted by loss of service did not have the correct IMEI or any at all on their phone.
But my IMEI was there and it was correct. So I restored the nandroid backup I made at the time of flashing MIUI but that didn't solve the issue so I restored the backup I made when I originally rooted my phone and installed CWM. That still didn't fix it. Some forum posts were saying the SIM card might have been fried, some were saying that they had totally lost the ERI folder, or something... I was getting worried. The last thing I tried was flashing a stock 4.1.1 rom via Odin and still I had no service. Well I needed a phone for work so I went on the VZW site Monday morning and switched my service to an old blackberry storm (I know, right?) that I had laying around and went to work. When I got home I looked on the web some more and found info about accessing the hidden menu with a code that wipes all data and settings. Is this different than the factory wipe from the settings menu? Anyway I wiped via the hidden menu and after that the little roaming triangle was gone. I switched my service back to the Gs3, which involved taking out the SIM card and registering it again, and after that my service, data, and 4g icon was back. Problem solved. I am wondering though if I could have used the hidden menu/wipe feature from MIUI, and for that matter what caused my phone to get stuck in roaming?
I would like to root, and explore other roms but now I'm worried about this happening again. It doesn't help that someone told me service providers can deny service for rooting your phone. I don't know if that's true or not. I know now that I should make a IMEI backup, even though I don't think that was my problem. I recently took the ota and am back on stock 4.1.2. Just wanted to share this with everyone, and bounce it around to see if anyone has any ideas, and maybe this could help someone who is having the same issue. As far as the hidden menu and wipe code, I don't remember what it was but you could look it up if you need to try it.
Thanks everyone
Click to expand...
Click to collapse
My suggestion, never use Rom Manager to flash!! Stick to TWRP(I prefer twrp), CWM or Odin.
Long story short, my phone was stuck in a bootloop and I wasn't able to format the phone/cache partition through recovery mode, and had to restore or something onto the phone (following this tutorial, I'm not really an expert with this type of stuff to be honest so I don't even 100% know what it is I did), which worked, however, even though my phone was formatted, it booted with Lollipop 5.0.2 (I'm probably being dumb, but I wasn't really expecting this when I restored to "stock firmware"), AND kept the wallpaper I had before the phone was stuck in bootloop, and to my knowledge I didn't back it up anywhere or anything, so I don't know if the phones been fully formatted (I've done it several times today) or what.
But since I've restored my phone, my operating network just doesn't work, like the title says. I can't make calls or texts, nor can I receive any, and the data doesn't work. The status of my phone says that it's "out of service", can't detect my network etc, with any SIM card I put in the phone. I've read somewhere that it might be something to do with the modemst1/modemst2 files or something that I flashed when restoring my phone, but honestly I don't fully know what to do and everything I read seems to be different.
If anybody knows what I can do to sort this out it would be absolutely awesome and much appreciated. Cheers!
I have a note edge SM-N915T (T-Mobile version) and i am requesting for anyone's efs back up. Before you get all worried about giving me your imei, my device already has an imei on it and i am able to view it. The only problem that having a corrupt efs folder is that I can't connect to most wifi networks properly. Even if i do, when i restarted, all the data for wifi gets wiped out so I have to reinput it in. If anyone is willing to give me the efs back up that will be fantastic because I have been trying to attack this problem since feburary.
Hi Everybody,
I'm looking to see if there is anybody who can change/restore my IMEI number (ideally remotely) with an Octopus Box.
My understanding is that, for all the hacks and work arounds, it's basically not possible to change it by flashing efs.img etc... not that I have backups!
I do have my original IMEI number.
Any help/advice will be appreciated.
A bit of a back story.
I rooted my phone and it was all working well for about a week. One evening I picked up my phone and the screen was black with a solid blue light. Cue numerous attempted resets via the power + vol. down keys.
No joy.
After lots of reading (mostly from here), I finally found a solution to re-flash via odin but this was failing and it all resulted in me having to re-partition the phone which seemed rather scary given I have no knowledge of all this stuff (I've been an iPhone user for the past 5 years). Eventually I got a stock ROM to successfully flash but in doing so, seem to have wiped out/corrupted efs and, as mentioned, I have no backup (mostly because I didn't know it was a thing).
My phone now is essentially a tablet, albeit a very small one. I have pretty much full functionality with the exception of phone calls/SMS because of the IMEI issue. It also says the bluetooth address is unavailable in settings, but bluetooth seems to work fine (but to be fair, I don't use for much more than connecting to a BT speaker).
_jamieb said:
Hi Everybody,
I'm looking to see if there is anybody who can change/restore my IMEI number (ideally remotely) with an Octopus Box.
My understanding is that, for all the hacks and work arounds, it's basically not possible to change it by flashing efs.img etc... not that I have backups!
I do have my original IMEI number.
Any help/advice will be appreciated.
A bit of a back story.
I rooted my phone and it was all working well for about a week. One evening I picked up my phone and the screen was black with a solid blue light. Cue numerous attempted resets via the power + vol. down keys.
No joy.
After lots of reading (mostly from here), I finally found a solution to re-flash via odin but this was failing and it all resulted in me having to re-partition the phone which seemed rather scary given I have no knowledge of all this stuff (I've been an iPhone user for the past 5 years). Eventually I got a stock ROM to successfully flash but in doing so, seem to have wiped out/corrupted efs and, as mentioned, I have no backup (mostly because I didn't know it was a thing).
My phone now is essentially a tablet, albeit a very small one. I have pretty much full functionality with the exception of phone calls/SMS because of the IMEI issue. It also says the bluetooth address is unavailable in settings, but bluetooth seems to work fine (but to be fair, I don't use for much more than connecting to a BT speaker).
Click to expand...
Click to collapse
do you have any news for this octopus box?
I also have to reset my number imei .... I lost it due to a flash gone wrong.
I have a note4
So today I'm doing the usual flashing of new roms to try them out and I run into a problem. During device setup, Google Fi fails to activate giving error code B042, and also errors out when it's time to register my fingerprint. Didn't think much of it at first, but now I've tried everything I can think of with no luck. Eventually I notice both IMEIs are listed as all zeros. I've wiped data multiple times, reflashed many factory and custom rom versions both with Android flash tool and manually, and always get the same issue with Fi activation and fingerprint scanner not working. I talked with Google techs and they just tell me to take it to Best Buy where it was purchased. I'm thinking a partition must have corrupted or something that doesn't restore during a typical reflash. Can anyone comment on what's going on, and if there's a way to go about fixing it myself. I do have both IMEIs listed on the box if there's a way to go about restoring them, but I doubt that would do anything with the fingerprint problem if even possible. Any insight would be greatly appreciated. Been on these forums for a decade and this may be my first time posting since I've always been able to work through problems myself, but I'm totally stuck on this one. Oh and the Pixel 7 pro I just bought to mess around with root and roms as a second phone, and my main S22u is still working fine, so not exactly an emergency or anything. Thanks in advance.
oncestruck said:
So today I'm doing the usual flashing of new roms to try them out and I run into a problem. During device setup, Google Fi fails to activate giving error code B042, and also errors out when it's time to register my fingerprint. Didn't think much of it at first, but now I've tried everything I can think of with no luck. Eventually I notice both IMEIs are listed as all zeros. I've wiped data multiple times, reflashed many factory and custom rom versions both with Android flash tool and manually, and always get the same issue with Fi activation and fingerprint scanner not working. I talked with Google techs and they just tell me to take it to Best Buy where it was purchased. I'm thinking a partition must have corrupted or something that doesn't restore during a typical reflash. Can anyone comment on what's going on, and if there's a way to go about fixing it myself. I do have both IMEIs listed on the box if there's a way to go about restoring them, but I doubt that would do anything with the fingerprint problem if even possible. Any insight would be greatly appreciated. Been on these forums for a decade and this may be my first time posting since I've always been able to work through problems myself, but I'm totally stuck on this one. Oh and the Pixel 7 pro I just bought to mess around with root and roms as a second phone, and my main S22u is still working fine, so not exactly an emergency or anything. Thanks in advance.
Click to expand...
Click to collapse
Sounds like your EFS partition got corrupted...
I haven't done anything with my P7P, it's stock, so can't offer any advice other than a google search to get you started... here
If the mod will erase it not state it. You mess with that you are on your own? Broke the op as well. Just delete it.