[Q] My experiments with e970 and unanswered questions..!! - AT&T LG Optimus G

First upon there are few senior guys in here who hates noobs questions, to them " Don't forget you too where a nobiee in the beginning."
NOw my story!!
2 weaks before I brought one unlocked E970 from my friend, which runs CM11 nightly 13. The first thing I did was updating to 14 which was just released. The phone had little heating problems and gps fixing issue, also terrible battery backup due to wake locks.
So I flashed the cm 10.2 stable and found all issues fixed except the phone fails not register in 900mhz 2G networks in India (I mean weak signal in 900mhz, where other carriers like DOCOMO which works on 1800mhz are works just fine).
After reading a lot I decided to flash on nexus 4 radio (.54),but there is no hope.
Then I flash back the stock ATT_JB radio and find the network problem is resolved have all frequencies (900/1800mhz gsm) and carriers listed, but my sim is not recognizing.
Ok good, I start flashing almost every radio up there
E970,e971,e973,e977 - all gives the No sim error. ( even on LS970) ( surprisingly the all shows the same baseband also)
but all the nexus 4 radios did works, but terrible signal in GSM 900mhz. ( also experience few problems in .84 and above)
Guys I even flashed on E980 modem and find the network and SIM works amazing but no audio, speaker and demigod crash. Which can be understood since e980 is snapdragon 600 SOC.
OK I must have broke some thing lets go to the beginning, so I did the LGNPST and return my phone to 4.1.2 stock att&t.
results -- Stock rom and stock rado
problems-- not even network scan is working( error in scanning network), and of curse no SIM!!!
That's it> I rooted my phone by using freegee unlocked my boot loader and install CWM. Then flashed back the CM11 and nexus radio. Atleast the phone is working expect the volume keys are inverted.
I may have broke the EFS, but I have IMEI number and phone working in N4 modem. So the issue is with the ATT radio which may be some RIL issue I guess.
In order to get my phone useful, either I have to make the ATT radio accpet my SIM or some have edit the nexus4 radio and make it give a good signal in gsm 900mhz. Also the inverted volume keys are awkward.
To be honest I have no idea what to do next, but I strongly feels its a software error and can be fixed, BUT HOW?

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harirajrin said:
First upon there are few senior guys in here who hates noobs questions, to them " Don't forget you too where a nobiee in the beginning."
NOw my story!!
2 weaks before I brought one unlocked E970 from my friend, which runs CM11 nightly 13. The first thing I did was updating to 14 which was just released. The phone had little heating problems and gps fixing issue, also terrible battery backup due to wake locks.
So I flashed the cm 10.2 stable and found all issues fixed except the phone fails not register in 900mhz 2G networks in India (I mean weak signal in 900mhz, where other carriers like DOCOMO which works on 1800mhz are works just fine).
After reading a lot I decided to flash on nexus 4 radio (.54),but there is no hope.
Then I flash back the stock ATT_JB radio and find the network problem is resolved have all frequencies (900/1800mhz gsm) and carriers listed, but my sim is not recognizing.
Ok good, I start flashing almost every radio up there
E970,e971,e973,e977 - all gives the No sim error. ( even on LS970) ( surprisingly the all shows the same baseband also)
but all the nexus 4 radios did works, but terrible signal in GSM 900mhz. ( also experience few problems in .84 and above)
Guys I even flashed on E980 modem and find the network and SIM works amazing but no audio, speaker and demigod crash. Which can be understood since e980 is snapdragon 600 SOC.
OK I must have broke some thing lets go to the beginning, so I did the LGNPST and return my phone to 4.1.2 stock att&t.
results -- Stock rom and stock rado
problems-- not even network scan is working( error in scanning network), and of curse no SIM!!!
That's it> I rooted my phone by using freegee unlocked my boot loader and install CWM. Then flashed back the CM11 and nexus radio. Atleast the phone is working expect the volume keys are inverted.
I may have broke the EFS, but I have IMEI number and phone working in N4 modem. So the issue is with the ATT radio which may be some RIL issue I guess.
In order to get my phone useful, either I have to make the ATT radio accpet my SIM or some have edit the nexus4 radio and make it give a good signal in gsm 900mhz. Also the inverted volume keys are awkward.
To be honest I have no idea what to do next, but I strongly feels its a software error and can be fixed, BUT HOW?
Click to expand...
Click to collapse
you done lots of wrong things with your phone for minor network issue.
First flash Stock LGNPST to make your phone usable. And then use it for about a day. sometimes due to low signal it doesn't network.
If still doesn't work then flash EFS and Stock ATT JB modem and then try to use it.
or ask your friend if he gave you and unlocked phone or locked one or he might have bricked modem just like you are trying todo.
Flashing files for diff in your phone makes things worse and might give you Hard brick. so never flash anything of other phones. NEVER.
Your best bet is to use stock rom for a while to make things normal or else you might hard brick your phone and also if you are buying phone from someone else then first check it if everything works or not.

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I DID TRIED lgnpst
ShoaibAhmed said:
you done lots of wrong things with your phone for minor network issue.
First flash Stock LGNPST to make your phone usable. And then use it for about a day. sometimes due to low signal it doesn't network.
If still doesn't work then flash EFS and Stock ATT JB modem and then try to use it.
or ask your friend if he gave you and unlocked phone or locked one or he might have bricked modem just like you are trying todo.
Flashing files for diff in your phone makes things worse and might give you Hard brick. so never flash anything of other phones. NEVER.
Your best bet is to use stock rom for a while to make things normal or else you might hard brick your phone and also if you are buying phone from someone else then first check it if everything works or not.
Click to expand...
Click to collapse
I did tried the stock and the modem flashes.. finally I sold it .