[Modems][d800][JB/KK/LP] AT&T Stock Modems

[blastagator]

Original AT&T Modems
!! d800 ONLY !!
Make sure you flash the right model!​

This is a very straightforward thread. I was tired of hunting around for "newer" modems. Additionally, I did partition dumping of 20y and 30f, so I figured I'd share the goodies.

I turned the modems I have into flashable zips and posted them.

Current Postings:
Jellybean: d80010d & d80010o
Kitkat: d80020c & d80020y
Lollipop: d80030f


Download:
https://www.gregtwallace.com/lg-g2/d800-modems/


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[blastagator]

-reserved-

 

[haseeb_zain]

Will the lollipop modem work for custom roms like CM12?

 

[berryman13]

Will the lollipop modem work for custom roms like CM12?

Assume NO - why do you want to flash it anyways? You will not find anything fixed, the problems lie in the bootloader.

 

[haseeb_zain]

Assume NO - why do you want to flash it anyways? You will not find anything fixed, the problems lie in the bootloader.

I'm having signal drop problem with JB and KK modems so I thought i could give a try to 30F to see if it is fixed.

 

[ukguy115]

Tried on latest bliss for d800, booted fine but only sensor that works seems to be GPS. Everything else doesn't for me. Flashed back to previous and all is good.

 

[haseeb_zain]

Tried on latest bliss for d800, booted fine but only sensor that works seems to be GPS. Everything else doesn't for me. Flashed back to previous and all is good.

Which version did you try?

 

[ukguy115]

Which version did you try?

30f but I am on jb sourced ROM so naturally that's expected

 

[plguzman]

Installed 30f in my wife's D800 and everything so far so good. She had some signal problems with GPS nav, lets see if this fixes it. Thanks

 

[cmlohff]

Flashed 30f on my d800 running the latest PA (MikeCriggs' 5.1.1 builds). I couldn't get rotation to work. I just want to confirm that it's not patched yet.

 

[faheyd]

I may or may not have a hardware problem, I'm getting intermittent GPS lock loss.
Jellybean: d80010d & d80010o LTE, rotation works, GPS losses lock
Kitkat: d80020c & d80020y , LTE, no rotation and GPS losses lock
Lollipop: d80030f, every 5 seconds, complete loss of radio, rotation, GPS losses lock
I'm on 06/12 nightly, D800, formatted/wiped, gapps-lp-20141212-signed, everything else works. (Same results on older nightlies).

I hate to say this, but is my only option at this point, to flash back to stock and see the the GPS loss follows the hardware and not the roms?
Thanks,
Dylan

 

[faheyd]

Well damn it all to hell. I flashed back to v10d tot stock rom and my GPS still doesn't lock like it should. So it's a hardware problem. That sucks as I love this G2/D800. At least I was able to eliminate the radios as the cause.

 

[Choristav]

Well damn it all to hell. I flashed back to v10d tot stock rom and my GPS still doesn't lock like it should. So it's a hardware problem. That sucks as I love this G2/D800. At least I was able to eliminate the radios as the cause.

Have you tried the good ol' screwdriver GPS fix?

 

[faheyd]

I'm about to use the hammer fix, what is the fix that you speak of ?

OK, I found it, I do dread opening up my G2... we'll see.

https://www.google.com/search?q=screwdriver+GPS+fix&ie=utf-8&oe=utf-8

And teardown page for G2: https://www.ifixit.com/Teardown/LG+G2+Teardown/20485

where the gps is on the G2: http://forum.xda-developers.com/showthread.php?t=2485088&page=24

---------- Post added at 10:51 AM ---------- Previous post was at 10:35 AM ----------

Just squeezing (very hard squeeze) the upper right of my G2 screen got my GPS to start locking. So, soon, I'll use my finger nail to open up the G2 and fix the GPS sensor connector. Thanks !

 

[FlashHappy78]

Can anyone tell me which modem and bootloader I need to run a 5.1.1 aosp based ROM on my d800 please? I've been scouring all over xda and have been out of the loop for almost a year. Just dug this g2 out a few days ago while I wait for parts to arrive for my more recent phone. Sorry if this is OT, but any help would be greatly appreciated. Thanks

 

[delacruzivancarlo25]

hello guys need help, how to go back to stock specially to d8002y i'm currently on custom rom [simple rom] because i want to update to 30f which requires to be on d80020y. from this thread >> http://forum.xda-developers.com/att-g2/general/update-to-stock-lolipop-d80030f-root-t3084081

 

[Turbine1991]

Correct me if I'm wrong about the GPS, but I believe it gets geographical lockon hints from WiFi/3g data/radio towers. If you've enabled everything regarding location. Use fastergps and set your closest NTP server through fastergps. This was a more common problem on older Android phones which were modded or imported.

---------- Post added at 12:34 PM ---------- Previous post was at 12:27 PM ----------

Can anyone tell me which modem and bootloader I need to run a 5.1.1 aosp based ROM on my d800 please? I've been scouring all over xda and have been out of the loop for almost a year. Just dug this g2 out a few days ago while I wait for parts to arrive for my more recent phone. Sorry if this is OT, but any help would be greatly appreciated. Thanks

Just choose a Lollipop (LP) modem and bootloader, most of the regional things just optimise it for common basebands for telco companies in that area.

Although I suggest going with AICP Marshmallow + minimal slim gapps. For the best performance and battery life. Launcher wise a customised Nova Premium (increase icon size etc) + the free Polycon icon pack, for the best user experience and design.

 

[stevehovey]

Question for OP

I have a stock LG G2 that has the OTA LP 5.0.2 Build LRX22G Kernel 3.4.0
When I upgrade to CM13 do I need to reflash the radios or change the bootloader so I get all my radios and sensors working?

When I first got the phone it was JB then OTA to KK on the same day, then like everyone else, I had the forced OTA to LP WHICH I HATE!!! I loved my home screen rotation with JB and Kitkat.

If i Could I would have this thing imaged back to KK and lock out OTA so it never changes again. BUT I have taken this phone to Tmobile now and they tell me that TMO OTA will not affect my phone because it wasn't a TMO model.

 

[Lipsypatricia]

D800

Hi guys..i need a módem for d800 and i have lineage 14.1 build january 2018. I have no signal..what can i do ? Please help me