[Q] Understand modem,baseband etc differences - G4 Q&A, Help & Troubleshooting

Hello guys! I have been using this forum for a few years now but today i had a frustration and i want an expert guy to help me out
I try to understand the differences between baseband, modem etc. What they are and what they do!
I have an LG G2 D802. Until now I used KK ROM GloudyG3 2.1. I decided to install blisspop today which needed first to install bootstack (what is this?!). I think is related to bootloader. Anyway. I did the procedure and the rom indeed was installed and booted ok. There was a problem with the signal reception though! WiFi was working.
Since I had a problem I had to return to CloudyG2 using a backup I made. I also had to install kitkat modem since i was stacked in LGs boot logo on the first restore try. Beofre today, I thought that I undestand various things on how this ROM thing works. Now with KK, LP etc I'm totally lost. Can someone guide me?

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[Q] Help! In a little bit of trouble...

Hello!
So recently i decided to take it upon myself and purchase a lg g3. After purchasing it, like all android phones; i rooted it. I installed CM 12.0 for the D852 Model here in Canada. Doing so, It installed perfectly well and i had it up and running without any issues, except for one. My data did not want to work at all. I did some researched and i didn't flash the modem to go along with lollipop. After multiple attempts of trying to boot into recovery i realized i did not have root anymore. Im currently running CM 12.0 without any connection to data networks at all and i am unable to get into recovery because i dont know how. Someone please help! I just want to either get my data working on CM 12.0 or to go back to stock if possible. I was on MTS data btw.
Thanks !
Eradivyn said:
Hello!
So recently i decided to take it upon myself and purchase a lg g3. After purchasing it, like all android phones; i rooted it. I installed CM 12.0 for the D852 Model here in Canada. Doing so, It installed perfectly well and i had it up and running without any issues, except for one. My data did not want to work at all. I did some researched and i didn't flash the modem to go along with lollipop. After multiple attempts of trying to boot into recovery i realized i did not have root anymore. Im currently running CM 12.0 without any connection to data networks at all and i am unable to get into recovery because i dont know how. Someone please help! I just want to either get my data working on CM 12.0 or to go back to stock if possible. I was on MTS data btw.
Thanks !
Click to expand...
Click to collapse
You should read instructions before flashing rom or sometimes you can really screw up !! Just flash a stock D852 FIRMWARE with lg flashtool and start all over again... That means you have to root again get bump again and so on...
Sent from my LG-D850 using XDA Free mobile app
shahkam said:
You should read instructions before flashing rom or sometimes you can really screw up !! Just flash a stock D852 FIRMWARE with lg flashtool and start all over again... That means you have to root again get bump again and so on...
Sent from my LG-D850 using XDA Free mobile app
Click to expand...
Click to collapse
Yeah, i read the instructions, just didn't notice it said that data was not working on the cm 12.0 rom! I managed to get recovery working and planning on flashing cloudy 1.93 as it is extremely stable and clean! thanks for the reply though

[Solved]Can't boot past lg logo

Solution: Needed ZV8 modem, that's all.
First of all, let me get this out of the way: the only access to being able to search the forums is via the XDA premium app, and I can't seem to figure out how to make it search for complete terms so when I search for "ls980 won't boot past lg logo" it searches for each word rather than the whole search term, so I end up with results for people wanting to make a logo for something, or talking about other LG phones, etc. So I apologize if this question has been answered a million times before, I personally have had no luck manually searching for an answer.
Basically, my issue is that my brand new insurance replacement LS980 won't boot past the LG logo when flashing things like the lollipop version of AICP. I've tried flashing a few different baseband and modems because I vaguely remember having this issue before when ZVA was still new, that most AOSP roms would fail to boot if you were still on ZV7 or ZV8, or were testing a version of ZVC.
So, can someone tell me what I need to flash to be able to run lollipop roms? IIRC I had this issue with some CM11 based roms too, but not all of them (as I'm currently running the very last AICP before they transitioned the nightly to lollipop)
agentfusion said:
First of all, let me get this out of the way: the only access to being able to search the forums is via the XDA premium app, and I can't seem to figure out how to make it search for complete terms so when I search for "ls980 won't boot past lg logo" it searches for each word rather than the whole search term, so I end up with results for people wanting to make a logo for something, or talking about other LG phones, etc. So I apologize if this question has been answered a million times before, I personally have had no luck manually searching for an answer.
Basically, my issue is that my brand new insurance replacement LS980 won't boot past the LG logo when flashing things like the lollipop version of AICP. I've tried flashing a few different baseband and modems because I vaguely remember having this issue before when ZVA was still new, that most AOSP roms would fail to boot if you were still on ZV7 or ZV8, or were testing a version of ZVC.
So, can someone tell me what I need to flash to be able to run lollipop roms? IIRC I had this issue with some CM11 based roms too, but not all of them (as I'm currently running the very last AICP before they transitioned the nightly to lollipop)
Click to expand...
Click to collapse
If you still have custom recovery. Is it TWRP at 2.8.1 or higher.
Download zv8 modem from http://forum.xda-developers.com/showthread.php?t=2451426
Wipe everything but internal. Flash ROM, radio, gapps. Boot.
This is how we upgraded zva to zvc on d3rp.
Sent from my Nexus 7 using Tapatalk
Ah! That's the issue! I was assuming it needed a more recent radio, like ZVA or ZVC. Didn't think ZV8 would be the one. Thank you!

"if you're rooted with a custom recovery you can flash any ROM"

Is there any truth to this? I'm paraphrasing from a post a read about an hour ago. For context, he was talking about being able to flash basically any ROM regardless of software version after you successfully get TWRP working.
I was wondering because i have a vs985 24B which makes it pretty hard to find relevant information for even the mainstream ROMs like skydragon and cloudyg3. I found a way to root and get TWRP but if possible I'd like to avoid experimenting with ROMs that aren't confirmed working for my software version.
awohlgemuth said:
Is there any truth to this? I'm paraphrasing from a post a read about an hour ago. For context, he was talking about being able to flash basically any ROM regardless of software version after you successfully get TWRP working.
I was wondering because i have a vs985 24B which makes it pretty hard to find relevant information for even the mainstream ROMs like skydragon and cloudyg3. I found a way to root and get TWRP but if possible I'd like to avoid experimenting with ROMs that aren't confirmed working for my software version.
Click to expand...
Click to collapse
If you sucessfuly rooted your phone and installed TWRP, you can flash any ROM that was built for your G3 version, nothing else.
For example, you cannot flash D855 version ROM on your device.
Sent from my LG-D855
awohlgemuth said:
Is there any truth to this? I'm paraphrasing from a post a read about an hour ago. For context, he was talking about being able to flash basically any ROM regardless of software version after you successfully get TWRP working.
I was wondering because i have a vs985 24B which makes it pretty hard to find relevant information for even the mainstream ROMs like skydragon and cloudyg3. I found a way to root and get TWRP but if possible I'd like to avoid experimenting with ROMs that aren't confirmed working for my software version.
Click to expand...
Click to collapse
nop only some aosp roms work that way(never ever flash kernel)
draskome said:
If you sucessfuly rooted your phone and installed TWRP, you can flash any ROM that was built for your G3 version, nothing else.
For example, you cannot flash D855 version ROM on your device.
Sent from my LG-D855
Click to expand...
Click to collapse
Thanks for the reply,
Does that rule apply even across kit Kat --> lollipop?
For example, will ROMs that havn't been updated in years with the most recent software version being VS985 10b work?
Sent from my VS985 4G
awohlgemuth said:
Is there any truth to this? I'm paraphrasing from a post a read about an hour ago. For context, he was talking about being able to flash basically any ROM regardless of software version after you successfully get TWRP working.
I was wondering because i have a vs985 24B which makes it pretty hard to find relevant information for even the mainstream ROMs like skydragon and cloudyg3. I found a way to root and get TWRP but if possible I'd like to avoid experimenting with ROMs that aren't confirmed working for my software version.
Click to expand...
Click to collapse
There are 2 words you should look for flashing a rom..
vs985 your device model
bumped
since it's so well known things need to be bumped it may not necessarily be mentioned on everything.. buuuut in most cases it is..
the only other thing to be mindful of is upgrading or downgrading from various Android versions & their modems & such..
oh and if you start messing with kernels.. some kernels will boot loop you if flashed over a different kernel with known issues.. that's usually mentioned in their related threads & by the time you mess with kernels you should be pretty familiar with things..
if you end up with a rom that won't boot.. not a problem.. just go back into twrp & use your backup.. because you should always have a backup made & ready..

Help new to this!

Hi guys and girls i am from the uk (england) and got my g4 about 4 months ago.
Fed up of lg's stock rom and how its very laggy and irritating to use now.
I have been looking everywhere about rooting the phone and installing custom roms to make it much better and more enjoyable to use.
But i am stuck i dont know whats the best way of rooting this phone i have tried booting it into stock recovery mode but it just dont work.
so can you guys please point me to a right good method of rooting and installing custom roms please?
Currently using android 5.1 on lg stock rom
Many thanks!
Take it that is a no haha
Well every phone has a different model number so I can be hard I soft bricked my phone were system ui stopped finally got bliss pop running I would go for cyanamod 12 or something
mrnoxx said:
Take it that is a no haha
Click to expand...
Click to collapse
Have you unlocked your bootloader ?
No not too sure how to do that. Any good threads you guys reccomend.
Many thanks
So I know this is scary for you and because it is something new, therefore be sure that you want to live with the responsability if something goes wrong.
Now, the next forum thread tells you how to flash an already rooted image BUT, and this is very important, this works only if you have the version 10c installed (Check in About Phone>Software Version)
http://forum.xda-developers.com/g4/orig-development/root-tmo-vzw-intl-variants-soon-root-lg-t3164765
If you have the latest version of the software (20a) the best thing is to unlock your bootloader, void your warranty in the process, and flash a custom recovery. After that, you just need to flash the SuperSu zip file and you will have root.
To flash custom ROMs, just access recovery and flash the zip file of your ROM.
I'm using the unofficial CM13.0 and works very good for me, but I do miss the official camera app.
Thankyou very much for your advice okarr. Will look into this

Need help on upgrading my rooted LG G3 on stock KitKat (T-Mobile)

If this is posted in the wrong area, I apologize.
I have a rooted LG G3 with TWRP running KitKat. No custom ROM (I rooted it primarily so that I could write to the SD card).
Lately my phone has running strangely lately. It becomes unresponsive for >10 seconds from time to time. Sometimes I press the power button and it won't wake up. So I want to reset my phone and upgrade to Lollipop and load a custom ROM (maybe Cyanogenmod or Cloudy custom ROM). I'm going to use TWRP and Titanium to back everything up on the phone first.
I haven't loaded custom ROMs since my HTC EVO 3D, so it's been a while. I had some (very) basic questions:
If I do a factory reset, will I lose root? I really want to get rid of the stupid non-responsive problem, but I don't want to lose root.
If I load a custom ROM, do I need a specific version of Android to do it? I don't want to load and incompatible ROM and brick my phone.
I've seen posts of people trying to go back to KitKat. Are there any issues with Lollipop that would make my phone issues worse?
Since I can't take OTA updates, how would I upgrade my Android if I have to? Will I lose root if I upgrade?
Thanks for any help you can give me!
lg g3
prater said:
If this is posted in the wrong area, I apologize.
I have a rooted LG G3 with TWRP running KitKat. No custom ROM (I rooted it primarily so that I could write to the SD card).
Lately my phone has running strangely lately. It becomes unresponsive for >10 seconds from time to time. Sometimes I press the power button and it won't wake up. So I want to reset my phone and upgrade to Lollipop and load a custom ROM (maybe Cyanogenmod or Cloudy custom ROM). I'm going to use TWRP and Titanium to back everything up on the phone first.
I haven't loaded custom ROMs since my HTC EVO 3D, so it's been a while. I had some (very) basic questions:
If I do a factory reset, will I lose root? I really want to get rid of the stupid non-responsive problem, but I don't want to lose root.
If I load a custom ROM, do I need a specific version of Android to do it? I don't want to load and incompatible ROM and brick my phone.
I've seen posts of people trying to go back to KitKat. Are there any issues with Lollipop that would make my phone issues worse?
Since I can't take OTA updates, how would I upgrade my Android if I have to? Will I lose root if I upgrade?
Thanks for any help you can give me!
Click to expand...
Click to collapse
what is the exact model no of ur lg g3?
answer for 1st question: if u factory reset ur phone ur phone will be still rooted.
answer for 2nd question: yes u need a specific version of Android
answer for 3rd question: no thats not true.
answer for 4th question: dont worry i will update ur phone.
kalpesh patil said:
what is the exact model no of ur lg g3?
answer for 1st question: if u factory reset ur phone ur phone will be still rooted.
answer for 2nd question: yes u need a specific version of Android
answer for 3rd question: no thats not true.
answer for 4th question: dont worry i will update ur phone.
Click to expand...
Click to collapse
Thanks for replying. I have a LG D851 (T-Mobile).
So far I've done a nandroid backup and used titanium backup for apps and data.
I downloaded CloudyG3 2.5. Does this contain the Android update, or do I have to update Android before loading Cloudy?
prater said:
Thanks for replying. I have a LG D851 (T-Mobile).
So far I've done a nandroid backup and used titanium backup for apps and data.
I downloaded CloudyG3 2.5. Does this contain the Android update, or do I have to update Android before loading Cloudy?
Click to expand...
Click to collapse
I just have to boot into recovery, wipe dalvik, system, data, and cache, install Cloudy, and I'm good, right?

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