No Signal after reverting to P2a42_S048_161111_ROW_fastboot - Lenovo P2 Questions & Answers

I tried to install Lineage OS, but something went wrong so installed the fastboot recovery file .
But after this I have no cellular signal. I was able to flash Lineage successfully , but still no signal.
Can some one please help me, I do not know what to do.

var89 said:
I tried to install Lineage OS, but something went wrong so installed the fastboot recovery file .
But after this I have no cellular signal. I was able to flash Lineage successfully , but still no signal.
Can some one please help me, I do not know what to do.
Click to expand...
Click to collapse
if you have previously saved efs just restore it and never move back to stock after flashing oreo roms it wrecks your imei and volte but if you have no efs backup try to flash the same lineage os and run fastboot erase modemst1,fastboot erase modemst2 commands and restart your mobile you will have signal and imei.then save backup of efs in twrp

var89 said:
I tried to install Lineage OS, but something went wrong so installed the fastboot recovery file .
But after this I have no cellular signal. I was able to flash Lineage successfully , but still no signal.
Can some one please help me, I do not know what to do.
Click to expand...
Click to collapse
What exactly did you do when you installed LOS? Weird if you didn't get a signal since you don't touch the modem files (modemst1,2, fsg etc) when using the recovery.

Rakesh1b said:
if you have previously saved efs just restore it and never move back to stock after flashing oreo roms it wrecks your imei and volte but if you have no efs backup try to flash the same lineage os and run fastboot erase modemst1,fastboot erase modemst2 commands and restart your mobile you will have signal and imei.then save backup of efs in twrp
Click to expand...
Click to collapse
I do not have EFS backup files. I flashed LOS and then seeing the cellular network issue, went back to stock after flashing MM s048.
Then I upgraded to Nougat using OTA and it got me the network back again. But now the funny thing, when I install LOS again, the data connection is very poor with most websites timing out while the same works fine when I flash stock Nougat through TWRP.

eried1 said:
What exactly did you do when you installed LOS? Weird if you didn't get a signal since you don't touch the modem files (modemst1,2, fsg etc) when using the recovery.
Click to expand...
Click to collapse
I went back to stock MM and upgraded to Nougat using OTA. I did'nt use the delete Modem command but still I think there is some issue.

Rakesh1b said:
if you have previously saved efs just restore it and never move back to stock after flashing oreo roms it wrecks your imei and volte but if you have no efs backup try to flash the same lineage os and run fastboot erase modemst1,fastboot erase modemst2 commands and restart your mobile you will have signal and imei.then save backup of efs in twrp
Click to expand...
Click to collapse
How to backup EFS on P2?

DS-1 said:
How to backup EFS on P2?
Click to expand...
Click to collapse
Does anyone have the backup of the (Indian)P2a42 EFS ? I screwed up the settings and phone does not have any network now.

Hey I can help you WhatsApp number 8436243173

lalfulsk said:
Hey I can help you WhatsApp number 8436243173
Click to expand...
Click to collapse
Thanks. Pinged you

kirtikhurana said:
Did you click flashall.bat during fastboot flashing?
Check IMEI no. is there? & baseband also.
Do first thing:- Update your phone from S48 to next 5 updates till s251 one by one through OTA,
Click to expand...
Click to collapse
Now, IMEI and baseband also gone. heard we can do restore from QCN but no idea how to do that.
Can you suggest me the procedure for doing that?

var89 said:
Now, IMEI and baseband also gone. heard we can do restore from QCN but no idea how to do that.
Can you suggest me the procedure for doing that?
Click to expand...
Click to collapse
Your phone is rooted?

lalfulsk said:
Hey I can help you WhatsApp number 8436243173
Click to expand...
Click to collapse
Thanks Lalfulsk for helping me restore my SIM signal.
Your knowledge on this is commendable !

var89 said:
Thanks Lalfulsk for helping me restore my SIM signal.
Your knowledge on this is commendable !
Click to expand...
Click to collapse
Bro edit your first post & share how to regained network imei because many people on our P2 are out of luck. that could help them.

amansehdav said:
Bro edit your first post & share how to regained network imei because many people on our P2 are out of luck. that could help them.
Click to expand...
Click to collapse
I gone make a video about it

lalfulsk said:
I gone make a video about it
Click to expand...
Click to collapse
what bro

amansehdav said:
what bro
Click to expand...
Click to collapse
About no signal fix

lalfulsk said:
About no signal fix
Click to expand...
Click to collapse
Bro, I Clean Installed LOS 14.1 & after using for few hours 1 sim stopped working & then i looked up in the IMEI same IMEI is showing for both slots.
Only one sim is working at a time. What should i do now?

amansehdav said:
Bro, I Clean Installed LOS 14.1 & after using for few hours 1 sim stopped working & then i looked up in the IMEI same IMEI is showing for both slots.
Only one sim is working at a time. What should i do now?
Click to expand...
Click to collapse
You can call me I can help you bro
Mobile: 8436243173

lalfulsk said:
You can call me I can help you bro
Mobile: 8436243173
Click to expand...
Click to collapse
thank you bro, I wiped everything & cean flashed LOS14.1 again now both IMEI are showing, before it was only one IMEI showing for both Sims

amansehdav said:
thank you bro, I wiped everything & cean flashed LOS14.1 again now both IMEI are showing, before it was only one IMEI showing for both Sims
Click to expand...
Click to collapse
Good bro

Related

Need help

My phones imei showing 004999010640000 and not registering to network since I unroot it and also I dont have the efs img or not nandriod back up. Even after flashing stock firmware the imei dont changes. Every thing is working fine except the network error but this is because of imei... How can I get back the imei now? Plz suggest.
sir273 said:
My phones imei showing 004999010640000 and not registering to network since I unroot it and also I dont have the efs img or not nandriod back up. Even after flashing stock firmware the imei dont changes. Every thing is working fine except the network error but this is because of imei... How can I get back the imei now? Plz suggest.
Click to expand...
Click to collapse
I had this problem and i installed the stock 4.3 via Odin. You can try this.Good luck!
if flashing stock doesn't work, try to flash modem.
jaymuhazar said:
if flashing stock doesn't work, try to flash modem.
Click to expand...
Click to collapse
can you give me the link of the file I'm on 4.3 xxuemk4.
sir273 said:
can you give me the link of the file I'm on 4.3 xxuemk4.
Click to expand...
Click to collapse
your imei is lost and you have to restoree your efs backup and restart the phone,simple as
saurabh88 said:
your imei is lost and you have to restoree your efs backup and restart the phone,simple as
Click to expand...
Click to collapse
They have said they don't have an efs backup or a nandroid backup..
GT N7105 with XDA Premium......that is all......

Samsung Note 2 - n7100 flash passed - stuck to Logo Samsung

Hello,
as tittle say, I used to flash with official baseband EUROPE XX telecom.
Flash via odin went good passed, but now it stuck to logo Samsung.
baseband name used to flash: N7100XXALJ1_N7100BOGALJ1
any suggestion help, thanks.
noc1 said:
Hello,
as tittle say, I used to flash with official baseband EUROPE XX telecom.
Flash via odin went good passed, but now it stuck to logo Samsung.
baseband name used to flash: N7100XXALJ1_N7100BOGALJ1
any suggestion help, thanks.
Click to expand...
Click to collapse
Go to recovery mode by pressing home button,volume up and power button then
Wipe data / factory reset
Wipe cache partition
Do this and it will solve your problem
Sent from my SM-N910C
Ohh, I almost forgot this. Thank you for your respond.
Problems, goes on!!!!
I lost IMEI right now!
noc1 said:
Problems, goes on!!!!
I lost IMEI right now!
Click to expand...
Click to collapse
You have ur EFS backup?
Just restore it..
najeebebrahim said:
You have ur EFS backup?
Just restore it..
Click to expand...
Click to collapse
Hi,
I just put the modem file on ODIN and start flash!
I have nothing done something else...
noc1 said:
Hi,
I just put the modem file on ODIN and start flash!
I have nothing done something else...
Click to expand...
Click to collapse
Ok..
Bro download frimware for your location from sams
And flash it thrw odin
najeebebrahim said:
Ok..
Bro download frimware for your location from sams
And flash it thrw odin
Click to expand...
Click to collapse
Hi,
You think I didn't lost efs backup, its saved somewhere?
Thanks for your fast respond
noc1 said:
Hi,
You think I didn't lost efs backup, its saved somewhere?
Thanks for your fast respond
Click to expand...
Click to collapse
Now u tell me that do u have a nandroid backup?
R u using any custom recovery like TWRP or CWM ?
No phone were all cleand, and I have just put that modem and installed. Thats all.
I dont use any TWRM or etc...
harsh09046 said:
Go to recovery mode by pressing home button,volume up and power button then
Wipe data / factory reset
Wipe cache partition
Do this and it will solve your problem
Sent from my SM-N910C
Click to expand...
Click to collapse
noc1 said:
No phone were all cleand, and I have just put that modem and installed. Thats all.
I dont use any TWRM or etc...
Click to expand...
Click to collapse
Hi,
Thank you for your support. Phone got back at latest updates and IMEI too.
I have NCK code for unlock, but I dont know why it said:
SIM Network unlock PIN
48428495
Network unlock request unsuccessfull
noc1 said:
Hi,
Thank you for your support. Phone got back at latest updates and IMEI too.
I have NCK code for unlock, but I dont know why it said:
SIM Network unlock PIN
48428495
Network unlock request unsuccessfull
Click to expand...
Click to collapse
You have to contact your SIM operator for this problem
Sent from my SM-N910C

imei problem

i'm on aosp 4.4 custom my imei is working well but if i flashed any other rom like lingos or resurection remix the imei is lost can anyone tell me a method to backup the imei from the current rom and restore it after flashing any rom?
hoda7070 said:
i'm on aosp 4.4 custom my imei is working well but if i flashed any other rom like lingos or resurection remix the imei is lost can anyone tell me a method to backup the imei from the current rom and restore it after flashing any rom?
Click to expand...
Click to collapse
Qcn backup on your aex via qfil, then restore it on other , no time to write but search on google.
Starchm said:
Qcn backup on your aex via qfil, then restore it on other , no time to write but search on google.
Click to expand...
Click to collapse
tried it but the backup button is not activated any another method?
hoda7070 said:
tried it but the backup button is not activated any another method?
Click to expand...
Click to collapse
Connect your phone in diagnostic mode, not in 9008 mode
Starchm said:
Connect your phone in diagnostic mode, not in 9008 mode
Click to expand...
Click to collapse
plz tell me how to connect in diagnostic mode?
hoda7070 said:
plz tell me how to connect in diagnostic mode?
Click to expand...
Click to collapse
root your phone / on custom ofc u have it / then terminal emulator
su enter
setprop sys.usb.config diag,adb enter and connect via usb.
Starchm said:
root your phone / on custom ofc u have it / then terminal emulator
su enter
setprop sys.usb.config diag,adb enter and connect via usb.
Click to expand...
Click to collapse
does not work:crying:
hoda7070 said:
does not work:crying:
Click to expand...
Click to collapse
it is 100% sure working, i did it enough times.
Starchm said:
it is 100% sure working, i did it enough times.
Click to expand...
Click to collapse
i tried two minute ago it worked now thank you i did backup now i will try to flash other rom and restore it
Starchm said:
it is 100% sure working, i did it enough times.
Click to expand...
Click to collapse
when i restored imei it does not worked sim not found
hoda7070 said:
when i restored imei it does not worked sim not found
Click to expand...
Click to collapse
u try los? cuz los dont have working ril right now
Starchm said:
u try los? cuz los dont have working ril right now
Click to expand...
Click to collapse
what do you mean with that?
i can not restore my backup imei?
hoda7070 said:
what do you mean with that?
i can not restore my backup imei?
Click to expand...
Click to collapse
that mean dont use los.
Starchm said:
that mean dont use los.
Click to expand...
Click to collapse
i'm sorry for question but i did not understand the meaning of "los"?
hoda7070 said:
i'm sorry for question but i did not understand the meaning of "los"?
Click to expand...
Click to collapse
Lineage os
Starchm said:
Lineage os
Click to expand...
Click to collapse
ok what about rr i just flashed it tried to restore imei but sim cards did not work is there is any solution for this?
hoda7070 said:
ok what about rr i just flashed it tried to restore imei but sim cards did not work is there is any solution for this?
Click to expand...
Click to collapse
Do u have baseband, and others?
Starchm said:
Do u have baseband, and others?
Click to expand...
Click to collapse
i do not know if i have it how i can know that?
hoda7070 said:
i do not know if i have it how i can know that?
Click to expand...
Click to collapse
i have found this basband in my setting on aosp 4.4 what i can do with it to make sim cards work after flashing rr take in mind that i made a backup when i was in this rom with qfil i have just flashed rr and restored qfil backup but sim cards did not work so i back to aosp 4.4 with the nand backup
hoda7070 said:
i have found this basband in my setting on aosp 4.4 what i can do with it to make sim cards work after flashing rr take in mind that i made a backup when i was in this rom with qfil i have just flashed rr and restored qfil backup but sim cards did not work so i back to aosp 4.4 with the nand backup
Click to expand...
Click to collapse
and on rr u sitll have baseband, but i think probably try download again rr or dont know, i dont ahve any more ideas.

twrp error

Hello everyone, I have a problem with TWRP.
In my previous phone when I made a complete backup of rom an partitions, I could test another rom and if I did not like it or it was bugged, I could do a compkete restore and everything would come back to previous state.
In this phone when I backup all my partitions in twrp and restore it all my sim card is not detect, even with rom reinstall... the only way is to restore it with kies, using model and serial nr, but that took ages and I lose twrp and custom rom, returning to complete stock.
I would appreciate some help. Thanks !!
Hello
Have you make a repair of the partitions?
Its an idea and hope i can help with this. In twrp under the option wipe is it.
greets from Germany
Madcat1st said:
Hello
Have you make a repair of the partitions?
Its an idea and hope i can help with this. In twrp under the option wipe is it.
greets from Germany
Click to expand...
Click to collapse
Hello it restores the partitions fine, with no errors but the only problem is no sim service.
Hello to Germany from Portugal ?
prbs1982 said:
Hello it restores the partitions fine, with no errors but the only problem is no sim service.
Hello to Germany from Portugal ?
Click to expand...
Click to collapse
This may be either the rom u installed upgrades your modem or a twrp problem...anyway next time restore every partition except the modem partition and tell me the result.
regards.
messi2050 said:
This may be either the rom u installed upgrades your modem or a twrp problem...anyway next time restore every partition except the modem partition and tell me the result.
regards.
Click to expand...
Click to collapse
Thanks i Will try that !
Same problem with me but i fix this by just flasing the rom with odin but then it show a drm problem screen.
After that i flash the twrp recovery then format the j7 through the recovery and it fixed every thing.
nikhilkv379 said:
Same problem with me but i fix this by just flasing the rom with odin but then it show a drm problem screen.
After that i flash the twrp recovery then format the j7 through the recovery and it fixed every thing.
Click to expand...
Click to collapse
Wich rom? The original? Thanks
prbs1982 said:
Wich rom? The original? Thanks
Click to expand...
Click to collapse
Yes the orignal...the latest one
nikhilkv379 said:
Yes the orignal...the latest one
Click to expand...
Click to collapse
Where can i get it? Thanks
prbs1982 said:
Where can i get it? Thanks
Click to expand...
Click to collapse
You can get the latest stock rom for your j7 here : updato(dot)com/
nikhilkv379 said:
You can get the latest stock rom for your j7 here : updato(dot)com/
Click to expand...
Click to collapse
Thanks !
prbs1982 said:
Thanks !
Click to expand...
Click to collapse
Welcome...bro

[SUSPEND] VOLTE fix for those who had lost after flashing stock(DON'T FOLLOW THIS)

EDIT
I HAVE DELETE THIS THREAD BECAUSE BY USING THIS METHOD PEOPLE MAY LOOSE THEIR IMEI if they don't have any efs backup ,
People apply this METHOD who has no IMEI Surely this method was only for those who already had efs backup ,
but now people thinks that it may bring IMEI,,which is not the proper way for restoring imei.
So to stop this misconception i am deleting all files and SUSPEND this thread.
Moderator Edit:
Members wishing to try this are advised to take extreme caution. This Thread may explain: HERE
It worked like a charm!!!!!
THANKYOU VERY MUCH FRIEND...
it worked ....:laugh::good::good:
my device is xt 1686 indian variant and i had hardbricked my mobile 6 months ago and unbricked using albus blankflash...
and since then using debloated roms or pixel experience rom...
after november patch.. i flashed flashable stock rom from twrp and i lost imei and volte...
i tried the solutions to recover 4g and imei and but couldnot get volte back since then...
now i am using twrp flashable january security patch and i dont have volte... i even dont have an option in my mobile networks to toggle enhanced 4g LTE mode...
now thanks to you .. your solution has worked like a charm ...
i downloaded your persist backup and placed it in my twrp backup folder and went in to twrp recovery and recovered my efs backup and next persist backup and restart system and voila my volte is back ....:good::good:
Arunxyz said:
THANKYOU VERY MUCH FRIEND...
it worked ....:laugh::good::good:
my device is xt 1686 indian variant and i had hardbricked my mobile 6 months ago and unbricked using albus blankflash...
and since then using debloated roms or pixel experience rom...
after november patch.. i flashed flashable stock rom from twrp and i lost imei and volte...
i tried the solutions to recover 4g and imei and but couldnot get volte back since then...
now i am using twrp flashable january security patch and i dont have volte... i even dont have an option in my mobile networks to toggle enhanced 4g LTE mode...
now thanks to you .. your solution has worked like a charm ...
i downloaded your persist backup and placed it in my twrp backup folder and went in to twrp recovery and recovered my efs backup and next persist backup and restart system and voila my volte is back ....:good::good:
Click to expand...
Click to collapse
welcome brother,now backup your volte working efs so in future if anythings goes wrong then it will helpful.
akshu2697 said:
welcome brother,now backup your volte working efs so in future if anythings goes wrong then it will helpful.
Click to expand...
Click to collapse
YES BRO..
I will backup my EFS right now...
thanks a lot ...
bro can i try this method for g5s plus xt1804 as well ?
muklshakya123 said:
bro can i try this method for g5s plus xt1804 as well ?
Click to expand...
Click to collapse
MAY BE YES,YOU CAN,BUT TAKE BACKUP OF ALL PARTITION BEFORE TRY.
this persist backup is from moto g4 plus and it is working for moto g5 plus so may be it should work for g5s plus too.
but remember i am not responsible for anything if it goes wrong( but it better to take risk when nothing works )
my gut says,it should work,so if you want ,then give it a shot.
ok will try that in the evening
Which ROM have you tried? Its not working in DotOS. Please help!
surensince93 said:
Which ROM have you tried? Its not working in DotOS. Please help!
Click to expand...
Click to collapse
You have to do this in stock rom
How to relock the bootloader after restoring??
akshu2697 said:
You have to do this in stock rom
Click to expand...
Click to collapse
Link for the downloading and steps to be followed for stock ROM please?
surensince93 said:
Link for the downloading and steps to be followed for stock ROM please?
Click to expand...
Click to collapse
Download any TWRP FLASHBLE ZIP STOCK ROM from forum,
#FLASH THAT STOCK ROM USING TWRP
#RESTORE YOUR OWN EFS BACKUP
#RESTORE PERSIST BACKUP
#REBOOT
AdityaYT said:
Click to expand...
Click to collapse
This guide is only for volte
akshu2697 said:
hey guys good news for you all,
i have found the solution for volte.
download persist backup from attachment(this backup is from moto g4 plus,i had restore it on my moto g5 plus and i got volte )
1)Flash stock rom with twrp or with fastboot,both will going to work.
2)Now you have to put this backup in twrp backup folder.
3)after this first you have to restore your own efs backup.
4)then restore this persist backup.
remember"do at your own risk",i am not responsible for anything if it goes wrong
this method is working for me so i am telling you all,and before do this please take your whole phone backup including every partition.
this can also be done if some one can provide our moto g5 plus persist backup,so if anyone has working volte then provide us moto g5 plus persist backup from twrp,then it is also usefull for all of us,THANK YOU
Click to expand...
Click to collapse
May I lock bootloader again after flashing this?
Sent from my Moto G5 Plus using XDA Labs
irfanalinawaz said:
May I lock bootloader again after flashing this?
Sent from my Moto G5 Plus using XDA Labs
Click to expand...
Click to collapse
You will get your volte,but I don't know any other stuff,sorry brother.
Now enjoy the volte.
akshu2697 said:
You have to do this in stock rom
Click to expand...
Click to collapse
akshu2697 said:
Download any TWRP FLASHBLE ZIP STOCK ROM from forum,
#FLASH THAT STOCK ROM USING TWRP
#RESTORE YOUR OWN EFS BACKUP
#RESTORE PERSIST BACKUP
#REBOOT
Click to expand...
Click to collapse
Link for stock ROM please? I couldn't find it!
surensince93 said:
Link for stock ROM please? I couldn't find it!
Click to expand...
Click to collapse
Try this ,
(This stock rom is from forum in TWRP FLASHBLE stock build)
Give credit to this man
https://mega.nz/#!SFIXlDoA!INcRIuH-WnaQjMlaJwmUgbZDcx-Lt8Uip-2rqxqse6A
Any FLASHBLE stock rom will work.
whats a persist backup,i cant see one after clicking on restore option??
AdityaYT said:
Click to expand...
Click to collapse
Unzip that persist file,
Put that file in your efs backup folder ,
After boot in twrp and go to restore,
Then in restore restore your efs ,you will see persist will also there ,so restore that persist after restoring efs.
In other words ,
#Unzip persist
#Open your efs backup folder of twrp in file manager
#Paste persist file in efs backup folder
#now boot in to twrp
#restore that efs ,in efs you will see efs and persist both will be there,
#so first restore efs then persist
See my attachment (how to put that file in twrp)
can someone please give a step by step guide of this method. I haven't tried anything like this so pls help me. I am on stock rom and bootloader locked. I really want to get my volte.

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