[Solved]Can't boot past lg logo - Sprint LG G2

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!

Related

[Q] T999L No signal with any ROM

I have a T999L and have flashed pretty much every ROM, and with all of them, I have no signal. I wipe cache/factory reset, installed, rebooted, and never have a signal. When I go into mobile networks, there's no apn. I've tried everything I could find from others with this problem and can't get it to work. What am I doing wrong? I have literally been doing this all day. Since 10 am and it's now 12:30 am. I would've flashed the stock ROM sooner, but my phone hasn't been working right, so I figured a newer one would be beneficial.
Oh, and I've only been trying the ones that say they're for t999l or d2lte.
Flash stock firmware with Odin. If you're having problems on every single rom something is wrong with your device or firmware. Only way to know is the Odin flash.
Sent from my SAMSUNG-SGH-I747 using Tapatalk
DocHoliday77 said:
Flash stock firmware with Odin. If you're having problems on every single rom something is wrong with your device or firmware. Only way to know is the Odin flash.
Sent from my SAMSUNG-SGH-I747 using Tapatalk
Click to expand...
Click to collapse
Thanks for replying.
I had been using what you provided (thanks for that, btw - that was super fast and easy, so even if I don't have a custom ROM, at least I'm rooted!) I ended up flashing back to that so it at least works. I think before I found your thread, though, I tried flashing ROMs a and stopped because not many said specifically for LTE, so I just didn't want to keep messing around. Once I realized my device was different, I dug more an was saved by your thread. Anyway, is it possible I messed something up when I had originally flashed non-functioning ROMs?
Wow, so I think I figured out my problem, and it's indicative that I shouldn't have been messing around with flashing... I didn't realize firmware and ROMs were different. So since I was flashing 4.4 ROMs with the old firmware, would that result in my problem or a brick? Sounds like unfixable brick, so I'm clearly very fortunate to have a working phone right now! lol
I'm doing a backup now and downloading LUVUBNC1. I know to use Odin for the firmware, but it's a .zip file, which Odin doesn't do... Sorry, I've flashed plenty of ROMs on my old phones, so doing anything outside of a regular .tar in Odin or .zip in recovery is a new concept to me and I'm not having the easiest time finding directions.
Sorry I haven't replied sooner. Had a lot going on lately and its just been hard to do much online.
The firmware you downloaded just needs to be extracted. Its zipped just to make it a smaller download. when you unzip it, the resulting file should be a .tar.md5 file. This is what you flash with Odin.
As for Roms, as long as you stay in the T-Mobile subforums, you will be relatively safe. Just do not flash any firmware or modems that are not specifically for your model. Some people have had some issues with certain roms not working quite right on the T999L, but its nothing that causes permanent harm. If this happens you can always just flash back to a known good rom, or your stock firmware.
So for future reference, you can flash all of the Roms, Kernels and Recoveries found in these T-Mobile forums. (In fact, I suggest flashing either the d2lte or d2tmo recoveries over the d2ltetmo). Just remember, Firmware and Modems are ok ONLY if they are for your model.
And with regard to flashing 4.4 roms on old firmware, you don't need to worrry about a brick as long as you stick to what I just said. The only thing different is for 4.4.2 touchwiz roms (which are all ported from Sprint or AT&T). To run a 4.4.2 TW rom, you must be updated to the 4.3 firmware (which you are if you are running NC1). But even so, if you were on earlier firmware, it wouldnt hard brick, it would just hang at boot.
I hope that clears things up a bit for you!

[Q] Understand modem,baseband etc differences

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?

"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..

Wipe to update/reflash...or ODIN.

I posted a thread a while back but I apparently posted the wrong type of thread. This one should be the right of the right type and in the right place.
On the Samsung devices I've had in the past, the boot loader was always a big deal when flashing new versions of android. I've had this tablet for a while now and haven't updated it since I bought it...and Odin flashed/rooted/installed TWRP on it.
From reading the megathreads, from threads, flashing threads, etc...it's not very clear if this is like the other Samsung devices I've had, or if this is like the EEEpad Transformer and Nexus 7 I had...and could move freely between android versions, stock roms...and nonstock ROMs, etc.
I'm running 5.0.2 and I play hearthstone competitively. I bought this for the display mainly, and now that I've loaded it with some crap, I'd like to flash a custom from/update. It seems my crap+samsungs crap saturates the ram quite well. Can I pretty much flash what I'd like? Or do I have to ODIN from stock to the latest build and then worry about number versions.
Also...I used to run an all that kept my TWRP version up to date. Goomanager I believe...but there are dozens of apps that claim to do this now...can I get a trusted suggestion?
Rooted on stock.
Android Version: 5.0.2
Kernel: 3.4.106 IronKernel V2.0 (mainly for s tweaks to boost audio)
Build LRX22G.T800XXU1BOC3
Forget about using an app to flash twrp.
Do it manually and be safe. Plus the official updates are lacking in features compared to the unofficial builds. Just check out the dev section and you'll see what I mean.
Thanks for the advice. And as far as flashing roms...can I pretty much flash what I'd like? Ex: go back and forth between Cm and stock builds...and between version builds while ignoring the boot loader? I'm basically trying to see if I've missed something critical since I rooted and flashed so long ago.
Jamesyboy said:
Thanks for the advice. And as far as flashing roms...can I pretty much flash what I'd like? Ex: go back and forth between Cm and stock builds...and between version builds while ignoring the boot loader? I'm basically trying to see if I've missed something critical since I rooted and flashed so long ago.
Click to expand...
Click to collapse
As long as you don't flash a firmware build that is incompatible with your current bootloader you can flash what you want back and forth.
ashyx said:
As long as you don't flash a firmware build that is incompatible with your current bootloader you can flash what you want back and forth.
Click to expand...
Click to collapse
Thats what I figured. I'm running the stock rom rooted. I don't know what boot loader I'm on, or how to get to the latest one. I have all the access in the world-- recovery, root. But there isn't a place here...or anywhere that clearly says what am going on. I have a charging issue and would like to foahh a new Kernel, and I might as well update in the process,...by there is no "Upgrade from Xxx while on the stock rooted ROM" guide. Plus my laptop has a crappy USB port, so If I need to Odin something on here, itd be quite the process.
Ive asked around for months, literally. I've never been in this position before. Have always kept up to date. But once you fall behind, in forums like these (especially given the fact hat there are multiple devices in this section), you need something explicit to get back where you need to be.
Last time I looked, there weren't any instructions. Ill look against today to see if I can just download the latest..zip of a 10.5 stock ROM from somewhere in the dev section and then wipe, and flash that. If you know if its alright to just wipe and flash a new ROM, lemme know. Or if I have to Odin to a new one in order to get a new boot loader before I flash the latest Kernel, which I think then one I'm trying to use his BOJ. IRONKernel. I use it for S Tweaks, the sound, and a few performance tweaks.
You have to flash the bootloader with Odin they are posted in the bootloader thread.
You can flash the stock firmware with flashfire.

LG-G3 D851 - 4G stopped working on Android 7/8/9.

Dear all,
I got a strange situation and I've tried several options already, but I'm lost.
My LG G3 D851 (T-Mobile) is currently running on Lineoage OS 8.1 and my 4G is not working.
Even though I selected 4G preferred. Highest what I get is H+.
I've found a modem file, but that screwed up my 4G and 3G completely.
It doesnt matter which custom rom I select it will not allow me to work with 4G.
If I go back to the original Android 6 Rom I got 4G.
Who got an idea to get this fixed?
Is your IMEI still There ? Does your Phone Show Up at qpst? You did Not Read
anything i grüess so you probably havent Backes Up your efs? Ist there No Connection at all? Flashing Roms will Not fix your problem. But you should Go to Marshmallow Stock For now.
Custom Roms only Work with 21c and lower maybe you Just flashed The Wrong Modem. Google For The XDA LG G3 Modem thread
tritratrulala390 said:
Is your IMEI still There ? Does your Phone Show Up at qpst? You did Not Read
anything i grüess so you probably havent Backes Up your efs? Ist there No Connection at all? Flashing Roms will Not fix your problem. But you should Go to Marshmallow Stock For now.
Custom Roms only Work with 21c and lower maybe you Just flashed The Wrong Modem. Google For The XDA LG G3 Modem thread
Click to expand...
Click to collapse
My IMEI is still tere.
Dont know what you mean with QPST.
I've got backups and I can go back to any state, but I dont know what I should even consider check the EFS?
I'll check the Modem thread.
Maybe I can find a solution in there.
tritratrulala390 said:
Custom Roms only Work with 21c and lower maybe you Just flashed The Wrong Modem. Google For The XDA LG G3 Modem thread
Click to expand...
Click to collapse
The 21C thing is incorrect. Each variant of the G3 has their own set of modems. There is no 21C for the D851.
If memory serves we had 10 series (KitKat), 20 series (Lollipop), and 30 (Marshmallow). I'm currently using 30D modem from last time I had a factory stock installed. I get 4G/LTE on all of the installed ROMs (KK, LP, MM, N, O). Even when I was on 20G they were all good, though I didn't have Oreo at the time.
@Mr-Dutch, I have a small collection of D851 modems up on Mega. Since your last stock was Marshmallow I figure the ones to try, if you elect to do so, is 30D or 30E.
https://mega.nz/#F!WVRWmDII!oeZ17walw3sOi71mDkCKrw
LG G3 D851, Mahdi v2.9 ROM (4.4.4), microG (NoGApps), MultiROM, XDA Legacy
Yeah my Bad that was for The 855. And there IT says in The Post that IT only works Up to 21c but Not sure If thats still a Thing.
So have you tried flashing a Modem? And does IT Work now?

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