please help, v35 stuck in firmware update mode. - LG V35 Questions & Answers

Hope someone can help. I purchased an unlocked v35 from amazon, and recieved the at&t variant (v350awm). It wasnt connecting to my carriers sim (metropcs) but also was not asking for an unlock code on boot so I assumed it was already carrier unlocked. I tried to flash the ULM kdz using lgup, but it failed with "error code 0x2000 invalid command response". Now it is stuck in fir firmware update mode. I searched and tried many different routes to try to repair but can't seem to find a good solution anywhere.
Would appreciate any insight people may have on this so that I dont just have a bricked phone. Thanks.

SHwang_Guitars said:
Hope someone can help. I purchased an unlocked v35 from amazon, and recieved the at&t variant (v350awm). It wasnt connecting to my carriers sim (metropcs) but also was not asking for an unlock code on boot so I assumed it was already carrier unlocked. I tried to flash the ULM kdz using lgup, but it failed with "error code 0x2000 invalid command response". Now it is stuck in fir firmware update mode. I searched and tried many different routes to try to repair but can't seem to find a good solution anywhere.
Would appreciate any insight people may have on this so that I dont just have a bricked phone. Thanks.
Click to expand...
Click to collapse
Did you use this version of LGUP?
https://www.lanzous.com/i3y5ocd

Shawnashley said:
Did you use this version of LGUP?
https://www.lanzous.com/i3y5ocd
Click to expand...
Click to collapse
finally found a version of LGUP that worked, and was able to flash successfully. I finally found this thread:
https://forum.xda-developers.com/lg-v35/help/lg-v35-download-mode-fix-t3885614
thanks a ton for your time!

SHwang_Guitars said:
finally found a version of LGUP that worked, and was able to flash successfully. I finally found this thread:
https://forum.xda-developers.com/lg-v35/help/lg-v35-download-mode-fix-t3885614
thanks a ton for your time!
Click to expand...
Click to collapse
Glad things worked out. Happy days are here again. :laugh:

Related

[Q] Soft Brick Issues, What Can I Do?

Hi Everyone,
I rooted and used TWRP. Everything was fine, got SU installed and what not. Then I downloaded CM 10.2 Snapshot and Gapps and flashed them for the G2. I got the fastboot error. After trying to erase and replace the recovery, I found this thread http://forum.xda-developers.com/showthread.php?t=2448960
I get all the way to the last step when I use the LG flash tool and it says "Dowload FAIL!" It says Device Model is different! The LG Flash Tool shows I have a D802, but my phone is branded Verizon and I had LTE working on it earlier today...so I assume it isn't the GSM version...Anybody have any idea what to do?
I'm a new user, so I can't post external links, but here is an imgur address Ea8zgf7.jpg to a photo of the issue
Text on phone in the download screen says "VUSER S0.0 AS0.0 B82 UHS (New line) S US LG-D802 04.3.1 Hrev_10 (new line) VS98010B
Unfortunately I keep running into tons of dead links for different ways of dealing with this issue. Now I'm really concerned that I'm going to get screen burn in because I cannot shut the phone off. It either sits in the fastboot/error screen or in the download screen / firmware update screen.
I would really appreciate anyone's input. I tried to use this link http://forum.xda-developers.com/showthread.php?t=2432476 But almost all of the links are dead.
bobbyt2012 said:
Hi Everyone,
I rooted and used TWRP. Everything was fine, got SU installed and what not. Then I downloaded CM 10.2 Snapshot and Gapps and flashed them for the G2. I got the fastboot error. After trying to erase and replace the recovery, I found this thread http://forum.xda-developers.com/showthread.php?t=2448960
I get all the way to the last step when I use the LG flash tool and it says "Dowload FAIL!" It says Device Model is different! The LG Flash Tool shows I have a D802, but my phone is branded Verizon and I had LTE working on it earlier today...so I assume it isn't the GSM version...Anybody have any idea what to do?
I'm a new user, so I can't post external links, but here is an imgur address Ea8zgf7.jpg to a photo of the issue
Text on phone in the download screen says "VUSER S0.0 AS0.0 B82 UHS (New line) S US LG-D802 04.3.1 Hrev_10 (new line) VS98010B
Unfortunately I keep running into tons of dead links for different ways of dealing with this issue. Now I'm really concerned that I'm going to get screen burn in because I cannot shut the phone off. It either sits in the fastboot/error screen or in the download screen / firmware update screen.
I would really appreciate anyone's input. I tried to use this link http://forum.xda-developers.com/showthread.php?t=2432476 But almost all of the links are dead.
Click to expand...
Click to collapse
See if this will help: http://forum.xda-developers.com/show....php?t=2471370
or this: http://forum.xda-developers.com/show....php?t=2477595
rfarrah said:
See if this will help: http://forum.xda-developers.com/show....php?t=2471370
or this: http://forum.xda-developers.com/show....php?t=2477595
Click to expand...
Click to collapse
Both 404'd
Thy the link below, if anything it will bring you back to Stock.
http://forum.xda-developers.com/showthread.php?t=2471370
bobbyt2012 said:
Both 404'd
Click to expand...
Click to collapse
Let's try that again. I don't know why it copied like that. Anyway:
http://forum.xda-developers.com/showthread.php?t=2471370
and
http://forum.xda-developers.com/showthread.php?t=2477595
Was this ever solved? I have the same problem as the OP except with my ATT LG G2 D800. The lg flash tool shows my device as a D802. I have even tried downloading the D802 firmware, but got an error about the laf memory.
Like the OP I have followed other posts, but never found a solution. Please help.
I have an update: I used the procedure to do a factory reset by pressing the power and vol down until the lg logo appeared then release the power and immediately press the power button again. This prompted me to press the power button to do a factory reset. It came up with an error, but then booted into the CWM which I was using to flash CM on my device.
Hope this helps others.
Hi, I know this has been way back from 2 years ago. But is there any solution yet? Mine is ls980 and I'm having the same problem. Somehow trying ti factory reset does not work as after I released the power and volume down button the screen goes dark immediately and if I press it too long it just turns off.
Flash a different ROM
Ok, I hope this will help others:
I have an LG-H500F from Telcel Mexico, it got the security error bull after rooting and uninstalling bloatware, I could not find the original ROM anywhere but I found one for LG-H502F which is basically the same phone but for two sims and tv tunner.
Anyway, trying to flash the 502F Rom to the 500F kept giving me a download error complaining about not being the same model so what I did was, opened the dll file in an hex editor and found the model part H502F so I changed to H500F and saved it, also I changed the name of the tot file to H500F and Boom! It flashed it and revived my bricked little toy!!!
Hope this helps...
supermauro said:
Ok, I hope this will help others:
I have an LG-H500F from Telcel Mexico, it got the security error bull after rooting and uninstalling bloatware, I could not find the original ROM anywhere but I found one for LG-H502F which is basically the same phone but for two sims and tv tunner.
Anyway, trying to flash the 502F Rom to the 500F kept giving me a download error complaining about not being the same model so what I did was, opened the dll file in an hex editor and found the model part H502F so I changed to H500F and saved it, also I changed the name of the tot file to H500F and Boom! It flashed it and revived my bricked little toy!!!
Hope this helps...
Click to expand...
Click to collapse
Hello, friend. Did you actually root your device? And if so, how did you made it? Please, I've looked everywhere and found nothing. Would like to read you. Thanks in advance and greetings from Mexico too.
Root H500F
Jhakob said:
Hello, friend. Did you actually root your device? And if so, how did you made it? Please, I've looked everywhere and found nothing. Would like to read you. Thanks in advance and greetings from Mexico too.
Click to expand...
Click to collapse
Yes, I did root the device, here is how I did it:
http://forum.xda-developers.com/lg-g3/general/guide-root-method-lg-devices-t3129197
Cheers

[Q] CrossDL [D800] to [LS980]

My phone is caught in a boot loop. I bought this phone and decided to restore the stock firmware on it, which for my carrier (AT&T) would be the D800 firmware. What the seller failed to tell me was that is was a Sprint phone. So I loaded the wrong firmware and now it's stuck unrooted and in a bootloop. I'm using the dll file that ignores the version check, but as soon as it connects to the LG Flash Tool, it comes up with the error "CrossDL [D800] to [LS980]"
Can anyone help me?
+1 Still need help.
CrossDL Error
CoopTang said:
+1 Still need help.
Click to expand...
Click to collapse
I need help too. Nobody don't know how to flash this phone with this error.
But today I found an interesting thread: http://www.zpsjbbs.com/thread-6445-1-1.html
Help me please to pass this error. My thread is there:
http://forum.xda-developers.com/showthread.php?p=51712797
@CoopTang and @matuh
I'm in the same boat as you guys. Any luck?
CoopTang said:
My phone is caught in a boot loop. I bought this phone and decided to restore the stock firmware on it, which for my carrier (AT&T) would be the D800 firmware. What the seller failed to tell me was that is was a Sprint phone. So I loaded the wrong firmware and now it's stuck unrooted and in a bootloop. I'm using the dll file that ignores the version check, but as soon as it connects to the LG Flash Tool, it comes up with the error "CrossDL [D800] to [LS980]"
Can anyone help me?
Click to expand...
Click to collapse
I can help you. I need original dll for your phone. i made some changrs and you flash your g2 with tot method. Read my post on 4PDA. I am from Ukraine. Sorry for my english.
if you still need the help - write in private message.
Anyone get help or fix for this???

Lg V20 stuck on Your device is corrupt. Visit link g.co/abh

Yesterday my v20 started restarting from nowhere. I had this issue before too. I never tried to root my phone never changed recovery nothing its 100% stock. After those restarts i tried to format it with lgup and between the process phone restarted again and now i am in to this annoying boot loop where i can only access fastboot. I cant access download mode nothing else my phone doesn't even turn on. Please help me to get back to normal. I have his 400$ brick laying around, :crying: :crying:
https://forum.xda-developers.com/v20/how-to/guide-patch-lgup-to-unlock-features-t3652222
My phone doesn't boot in download mode.
XblackdemonX said:
https://forum.xda-developers.com/v20/how-to/guide-patch-lgup-to-unlock-features-t3652222
Click to expand...
Click to collapse
I have access to only fastboot mode where oem unlock is unavailable and usb debugging is also unavailable.:crying:
If your phone wasn't rooted, then your NAND has become corrupt. LG has extended the warranty due to bootloops. Open a ticket with them.
-- Brian
Any way to fix that?
runningnak3d said:
If your phone wasn't rooted, then your NAND has become corrupt. LG has extended the warranty due to bootloops. Open a ticket with them.
-- Brian
Click to expand...
Click to collapse
I live in India And I imported phone from USA it's a T Mobile Unit. What are the options? Anything can be done at hardware level ? Without changing the entire motherboard?
No. Order an H918 with a cracked screen and clean IMEI off of eBay (actually it doesn't even have to have a clean IMEI, you can use the one from your current phone), and replace the board.
-- Brian
runningnak3d said:
No. Order an H918 with a cracked screen and clean IMEI off of eBay (actually it doesn't even have to have a clean IMEI, you can use the one from your current phone), and replace the board.
-- Brian
Click to expand...
Click to collapse
Board replacement is the only solution ?
I am in a similar situation.
having tried all the possible ways mentioned here in this forum, I am left with no other options
though I have a working download mode
tried flashing the ROM from other variants like US996 10F using LGUP Patched [The Rom flashed100% and boots up well, but FC in 10sec before i could do anything.
Please help!
Thank you
uccfar said:
Board replacement is the only solution ?
I am in a similar situation.
having tried all the possible ways mentioned here in this forum, I am left with no other options
though I have a working download mode
tried flashing the ROM from other variants like US996 10F using LGUP Patched [The Rom flashed100% and boots up well, but FC in 10sec before i could do anything.
Please help!
Thank you
Click to expand...
Click to collapse
runningnak3d said:
If your phone wasn't rooted, then your NAND has become corrupt. LG has extended the warranty due to bootloops. Open a ticket with them.
-- Brian
Click to expand...
Click to collapse
The above is still true, if this didnt happen immedately after/during rooting/flashing something or using a dd command (while also rooted) your board is dying and you need a new one.
V20 I can't update my V20
Hi, I have a v20 h918 with twrp installed and I can't update the Android version, I get an android lying with an open cover and it says below: error. Can you help me please? Thank you
17promise28 said:
Hi, I have a v20 h918 with twrp installed and I can't update the Android version, I get an android lying with an open cover and it says below: error. Can you help me please? Thank you
Click to expand...
Click to collapse
@princedede on telegram let's see if we can fix it
Thank you ! :good:

Lg V20 unlock bootloader problem

I have bought this secondhand handset, he says that it's us996 series, and when i check it in the setting information, it says us996 series, but then i decided to unlock bootloader, we know that us996 series could be unlocked legally, so when i follow the instruction, including put my IMEI and device ID in LG developer website to get permissions, the website says that my handset is LS997, so it can't unlocked legally, could any of you solve this problem? I desperately need your help, thank you (english is not my native language, so sorry for the language)
WitchKiller said:
I have bought this secondhand handset, he says that it's us996 series, and when i check it in the setting information, it says us996 series, but then i decided to unlock bootloader, we know that us996 series could be unlocked legally, so when i follow the instruction, including put my IMEI and device ID in LG developer website to get permissions, the website says that my handset is LS997, so it can't unlocked legally, could any of you solve this problem? I desperately need your help, thank you (english is not my native language, so sorry for the language)
Click to expand...
Click to collapse
Sounds like LS997 that was rooted before dirtysanta was patched, and they probably flashed a 996 rom, check ☒ see if you have root. If so it should be unlocked
Sent from my LG-H910 using XDA Labs
cnjax said:
Sounds like LS997 that was rooted before dirtysanta was patched, and they probably flashed a 996 rom, check ☒ see if you have root. If so it should be unlocked
Click to expand...
Click to collapse
I've tested it with root checker and it says no, then i checked the bootloader status whether it's unlocked or locked, and it says still locked, it's like no sign that this device had been rooted before
WitchKiller said:
I've tested it with root checker and it says no, then i checked the bootloader status whether it's unlocked or locked, and it says still locked, it's like no sign that this device had been rooted before
Click to expand...
Click to collapse
Wow that's very strange
Sent from my LG-H910 using XDA Labs
Oh yeah i forgot about it, maybe this data helps, because i know nothing how to interpret it
Android security patch pevel l
November 6, 2017
Baseband Version
MPSS.TH.2.0.1.c3-00027-
M8996FAAAANAZM-1.77269.3.79643.3
Kernel Version
3.18.31
Build Number
NRD90M
Software Version
US99610n
Security Software Version
MDF v2.0 Release 4
WitchKiller said:
I have bought this secondhand handset, he says that it's us996 series, and when i check it in the setting information, it says us996 series, but then i decided to unlock bootloader, we know that us996 series could be unlocked legally, so when i follow the instruction, including put my IMEI and device ID in LG developer website to get permissions, the website says that my handset is LS997, so it can't unlocked legally, could any of you solve this problem? I desperately need your help, thank you (english is not my native language, so sorry for the language)
Click to expand...
Click to collapse
check the sticker under the battery for model number, what does it say? if it is not US996 you can't use LG Dev site to unlock.
WitchKiller said:
Yes it is, does anybody have a solution?
Click to expand...
Click to collapse
The problem is you got sold a ls997 that got flashed with us996 firmware including the bootloader while it was still possible. The solution is to use it as is, return it, or root it with the dirty Santa method and make sure you use a kernel with the dirty Santa fix (since most kernels/roms labeled just us996 won't have it)
Phoenix591 said:
The problem is you got sold a ls997 that got flashed with us996 firmware including the bootloader while it was still possible. The solution is to use it as is, or root it with the dirty Santa method.
Click to expand...
Click to collapse
I tried it once root it with dirtysanta, but i got stuck in step1.bat when unlocking bootloader, it didn't go as instructed, specifically in the android terminal emulator section, after we put that long code "applypatch /...../dirtysanta"
ozkaya said:
check the sticker under the battery for model number, what does it say? if it is not US996 you can't use LG Dev site to unlock.
Click to expand...
Click to collapse
I can't find the sticker, maybe it's lost. Could you be more specific about that sticker attachment place
WitchKiller said:
I tried it once root it with dirtysanta, but i got stuck in step1.bat when unlocking bootloader, it didn't go as instructed, specifically in the android terminal emulator section, after we put that long code "applypatch /...../dirtysanta"
Click to expand...
Click to collapse
You need to roll back to version 10f, grab LG up from this thread, put it in
C:\Program Files (x86)\LG Electronics\LGUP\
Grab the firmware
Put your phone into download mode (power off / hold vol. up / plug in USB cable).
And then use the upgrade option in LG up to downgrade. Then follow the dirty Santa instructions
---------- Post added at 01:54 AM ---------- Previous post was at 01:47 AM ----------
WitchKiller said:
I can't find the sticker, maybe it's lost. Could you be more specific about that sticker attachment place
Click to expand...
Click to collapse
Probably intentionally removed, its literally impossible to miss. It takes up a large part of the back of the battery compartment (here's my factory unlocked us996 sticker on the original screen assembly). The clean back area is of course the battery compartment. The model being listed as LG-US996 (instead of US996) and the USA on the side (as opposed to BPT or UCL) differentiate the factory unlocked from the other two us996 variants
Phoenix591 said:
You need to roll back to version 10f, grab LG up from this thread, put it in
C:\Program Files (x86)\LG Electronics\LGUP\
Grab the firmware
Put your phone into download mode (power off / hold vol. up / plug in USB cable).
And then use the upgrade option in LG up to downgrade. Then follow the dirty Santa instructions
Click to expand...
Click to collapse
But i heard the rumour that the ls997 variant unable to flash firmware because the variant doesn't have .kdz file
WitchKiller said:
But i heard the rumour that the ls997 variant unable to flash firmware because the variant doesn't have .kdz file
Click to expand...
Click to collapse
That's just it: there's no ls997 firmware but it can flash other variant's firmware (except the T-Mobile h918) as long as it hadn't gone past a certain ls997 update (others reading this thread in the future, don't try it, if it's been on Sprint firmware and been updated in the past century it's impossible, think the last Sprint update that could was ZV6 or ZV7 iirc).
Since it's on US996 firmware it should be fine. Also a good idea to use the dump option in LG UP to backup the modem, modemst1 and modemst2, and misc before you reflash with LG UP, basically everything but user data won't hurt.
Phoenix591 said:
You need to roll back to version 10f, grab LG up from this thread, put it in
C:\Program Files (x86)\LG Electronics\LGUP\
Grab the firmware
Put your phone into download mode (power off / hold vol. up / plug in USB cable).
And then use the upgrade option in LG up to downgrade. Then follow the dirty Santa instructions
Click to expand...
Click to collapse
Do you have the tutorial of rolling back version of that firmware? If you have let me know, i kinda need it
WitchKiller said:
Do you have the tutorial of rolling back version of that firmware? If you have let me know, i kinda need it
Click to expand...
Click to collapse
that was basically all there is to it.
Get LG UP (put it in C:\Program Files (x86)\LG Electronics\LGUP) the firmware (kdz)
Put your phone in download mode by powering off, holding volume up and then connecting to the PC. Open LG UP.
Hit dump option, hit select all, uncheck user data on the partition list, then click ok. Since the phone was originally the LS997 the modem may be wierd so having a known good modem and modemst1 and modemst2 backup (done by that dump) is a good idea.
After the dump actually rollback by selecting the upgrade button and adding the kdz to the bottom section.
Phoenix591 said:
that was basically all there is to it.
Get LG UP (put it in C:\Program Files (x86)\LG Electronics\LGUP) the firmware (kdz)
Put your phone in download mode by powering off, holding volume up and then connecting to the PC. Open LG UP.
Hit dump option, hit select all, uncheck user data on the partition list, then click ok. Since the phone was originally the LS997 the modem may be wierd so having a known good modem and modemst1 and modemst2 backup (done by that dump) is a good idea.
After the dump actually rollback by selecting the upgrade button and adding the kdz to the bottom section.
Click to expand...
Click to collapse
It works!! Thank you so much, now there's another problem. My sim card locked, do you know how to solve it? I search online and none of them are free
WitchKiller said:
It works!! Thank you so much, now there's another problem. My sim card locked, do you know how to solve it? I search online and none of them are free
Click to expand...
Click to collapse
Flash a kdz with patch level of december 2016 using same above method. After that root using your preferred rooting method (Mine is given in signature, need to see in desktop mode). Then flash either SuperV20 or Vincent ROM and you should be fine (Let's hope so). I personally like Vincent more because it is based upon UX 6.0, looks nice and have most things ironed out.
dksoni411 said:
Flash a kdz with patch level of december 2016 using same above method. After that root using your preferred rooting method (Mine is given in signature, need to see in desktop mode). Then flash either SuperV20 or Vincent ROM and you should be fine (Let's hope so). I personally like Vincent more because it is based upon UX 6.0, looks nice and have most things ironed out.
Click to expand...
Click to collapse
Oh yeah thank you, but do you have some kind of tutorial about that? I think i need them
WitchKiller said:
Oh yeah thank you, but do you have some kind of tutorial about that? I think i need them
Click to expand...
Click to collapse
There is a link for guide in signature called "LG V20 back to stock"
dksoni411 said:
There is a link for guide in signature called "LG V20 back to stock"
Click to expand...
Click to collapse
I can't, because my variant is ls997, and the variant itself doesn't have .kdz file, i tried it once using LGUP but it says error LS997->US996
WitchKiller said:
It works!! Thank you so much, now there's another problem. My sim card locked, do you know how to solve it? I search online and none of them are free
Click to expand...
Click to collapse
Does a thing come up saying it's locked, or do you just not have service? Have you gone through the dirty Santa guide and finished rooting?

No service/wifi after oreo update

Hi,
i just flashed with TWRP the official oreo update from the ZTE site.
Now i get no service.
To do the initial setup I had to put my SIM card into another phone otherwise I couldn't get passed the setup.
I can see that the SIM is inserted in to the phone and the phone finds it (in the mobile network settings it sees it as SIM 1 instead of SIM SLOT 2 and he let me change the APN and the preferred network type).
When i try to change the call settings it says "Call settings error - Network or SIM card error".
Also some how I cannot connect to my wifi. To finish the setup a friend used his phone to hotspot me and it worked. I can even see the other networks, but I cannot see mine anymore.
Can anybody help me?
Thanks
Papa_Chub said:
Hi,
i just flashed with TWRP the official oreo update from the ZTE site.
Now i get no service.
To do the initial setup I had to put my SIM card into another phone otherwise I couldn't get passed the setup.
I can see that the SIM is inserted in to the phone and the phone finds it (in the mobile network settings it sees it as SIM 1 instead of SIM SLOT 2 and he let me change the APN and the preferred network type).
When i try to change the call settings it says "Call settings error - Network or SIM card error".
Also some how I cannot connect to my wifi. To finish the setup a friend used his phone to hotspot me and it worked. I can even see the other networks, but I cannot see mine anymore.
Can anybody help me?
Thanks
Click to expand...
Click to collapse
Did you use the correct modem/radio file with the bootstack?
Eg: the A2017 A2017G and A2017U all use different modem/radio files, make sure you are using the correct one for your model.
Hope this helps
Syberclone said:
Did you use the correct modem/radio file with the bootstack?
Eg: the A2017 A2017G and A2017U all use different modem/radio files, make sure you are using the correct one for your model.
Hope this helps
Click to expand...
Click to collapse
Were can I find them? And were can I check which one I got?
Syberclone said:
Did you use the correct modem/radio file with the bootstack?
Eg: the A2017 A2017G and A2017U all use different modem/radio files, make sure you are using the correct one for your model.
Hope this helps
Click to expand...
Click to collapse
Well, you were right. I just checked. The official one is A2017U, mine is a A2017G. Damn, I even checked it before flashing.
So now what? Should I get back to 7.1.1 or should I flash another oreo ROM?
Papa_Chub said:
Well, you were right. I just checked. The official one is A2017U, mine is a A2017G. Damn, I even checked it before flashing.
So now what? Should I get back to 7.1.1 or should I flash another oreo ROM?
Click to expand...
Click to collapse
You can probably get it fixed by just flashing your device modem. Look at the LOS 15.1 thread OP for the link.
ttkian said:
You can probably get it fixed by just flashing your device modem. Look at the LOS 15.1 thread OP for the link.
Click to expand...
Click to collapse
I found it but my main problem right now is that with the update root and TWRP went away.
I tried to flash it with fastboot but everytime it just boots. So I decided to try with ADB sideload and it gave me this error when he verify the package:
E: footer is wrong
E: Signature verification failed
E: error: 21
So right now i'm stuck here. I tried with TWRP and the device modem directly but no luck, it gives me the same error.
Papa_Chub said:
I found it but my main problem right now is that with the update root and TWRP went away.
I tried to flash it with fastboot but everytime it just boots. So I decided to try with ADB sideload and it gave me this error when he verify the package:
E: footer is wrong
E: Signature verification failed
E: error: 21
So right now i'm stuck here. I tried with TWRP and the device modem directly but no luck, it gives me the same error.
Click to expand...
Click to collapse
Looks like your bootloader is locked ( i think stock B20 does that) so you can't flash anything not signed. The is an old twrp from the MM B20 days that was signed but would probably not work on new bootstack. You will probably have to EDL back to a 7.1.1. for the G model to get the right modem back and to unlock the bootloader again. Then check the threads on how to flash B20 withouth relocking bootloader ( might not be possible at the moment i have not kept up with day to day info)
Try using the Edl tool by @djkuz
Or try the Axon7 tool kit, if you still have the current ROM.
Use the flash section and flash the correct modem/radio zip, see if that works.
If you have root access try changing the NON-HLOS.bin file (modem/radio file) with the correct version and restart your phone.
I'm not sure if that will work but its worth a try.
There are 2 setups with the NON-HLOS.bin and flashable version and replacement file.
Syberclone said:
Try using the Edl tool by @djkuz
Or try the Axon7 tool kit, if you still have the current ROM.
Use the flash section and flash the correct modem/radio zip, see if that works.
If you have root access try changing the NON-HLOS.bin file (modem/radio file) with the correct version and restart your phone.
I'm not sure if that will work but its worth a try.
There are 2 setups with the NON-HLOS.bin and flashable version and replacement file.
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Oh man, thank you so much. After reading threads the entire week I came to the conclusion that EDL was the only solution since I don't have access to root. But since I already failed one time I wasn't sure about it.
With this message you saved my life. Can I ask you one thing? I already tried to flash something through the Axon7Toolkit but I got stopped by the fastboot not working. If I want to have root access after I *hopefully* fix the modem, should I stick to EDL or is there another way to get the bootloader unlocked since it's bugged in the developer options (I already tried to do it with the Axon7toolkit but, again, I got stopped by the fastboot)?
Once again, thank you so much.
Papa_Chub said:
Oh man, thank you so much. After reading threads the entire week I came to the conclusion that EDL was the only solution since I don't have access to root. But since I already failed one time I wasn't sure about it.
With this message you saved my life. Can I ask you one thing? I already tried to flash something through the Axon7Toolkit but I got stopped by the fastboot not working. If I want to have root access after I *hopefully* fix the modem, should I stick to EDL or is there another way to get the bootloader unlocked since it's bugged in the developer options (I already tried to do it with the Axon7toolkit but, again, I got stopped by the fastboot)?
Once again, thank you so much.
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Click to collapse
I have Axon7tool kit, Edl tool by @djkuz and Miflash
I find sometimes a combination of them can get you up and running.
I've been using Edl tool to prep my phone and then flash Edl packages via Miflash.
You are most welcome btw.
did youbsolved the problem? i got an similar one.

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