Where to start with my second hand rooted G2? - G2 Q&A, Help & Troubleshooting

I got a second hand LG G2 (D802) that appearantly was rooted, but is running a stock ROM and recovery as far as I know. It also has the SuperSU app installed. I wish to flash Lineage OS, but don't really know where to start. I've flashed custom ROMs and recoveries on Nexus devices before, but this is slightly new to me.
My worry is that I might not start at the right point, since my device is already semi-ready. Could somebody point me in the right direction, please?

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[Q] Can I install Omni KK over the stock Rooted Lolipop Nexus 7 (2013) FLO

Hey guys I have not seen this in the Q&A section and I want to make sure I do it right.
I only recently rooted my Nexus 7, been running stock but decided I wanted to have Multi Windows like I have on my Note 4. I have not decided on a ROM as I was looking for the best one so I am still running Stock Rooted 5.0.2 I saw Omni ROM and I think that this would be the best ROM to attempt this as I tried the Xposed method and of course got the boot loop.
I see that currently on OmniROM.com that this device is still running on KK 4.4.4 according to the nightlies. I assume I would need to find a KK stock ROM and flash it on to my Nexus to downgrade back to KK in order to install this ROM, or will this install with TWRP even though I'm running Lollipop?
If so does someone have a quick link to the Stock KK files? I used Wug's Nexus Root Toolkit to root my device as I did not feel like going through the same hassel as when I rooted my Droid RAZR so I would just tell that to use those files instead.
I am always flashing ROMs on my Note 4 but I have never gone backwards and I think it was possible to install KK ROM once you upgrade to lolly but not use a lolly ROM if your still on KK.
Soulforged666 said:
Hey guys I have not seen this in the Q&A section and I want to make sure I do it right.
I only recently rooted my Nexus 7, been running stock but decided I wanted to have Multi Windows like I have on my Note 4. I have not decided on a ROM as I was looking for the best one so I am still running Stock Rooted 5.0.2 I saw Omni ROM and I think that this would be the best ROM to attempt this as I tried the Xposed method and of course got the boot loop.
I see that currently on OmniROM.com that this device is still running on KK 4.4.4 according to the nightlies. I assume I would need to find a KK stock ROM and flash it on to my Nexus to downgrade back to KK in order to install this ROM, or will this install with TWRP even though I'm running Lollipop?
If so does someone have a quick link to the Stock KK files? I used Wug's Nexus Root Toolkit to root my device as I did not feel like going through the same hassel as when I rooted my Droid RAZR so I would just tell that to use those files instead.
I am always flashing ROMs on my Note 4 but I have never gone backwards and I think it was possible to install KK ROM once you upgrade to lolly but not use a lolly ROM if your still on KK.
Click to expand...
Click to collapse
I don't think anyone has done a compatibility check to see what happens if you run a 4.4 build on a device with 5.x bootloaders. It might work, it might do weird things (usually with sensors/wifi)
Multiwindow never got merged, if you want it you'll have to build for yourself and cherrypick it. There were some remaining issues with the patch we never had time to fix, we got too busy with other stuff, and xplodwild wants to rewrite the whole thing after finding a better way to implement it.

[Q] I need some orientation through this subforum and G2 in general

Hello.
After being 2 years with a Galaxy Nexus, I have bought a LG G2 D802 32GB.
Well, I've managed to hard brick the device with only 2 days of use but got it back through warranty. But ever since I've been somewhat scared and doubtful of what I can and cannot do with this device.
I installed stock Lollipop via LG PC Suite (5.0.2 v30b), got it rooted and then installed TWRP via autorec. But I want to be able to flash rom and kernel among other things like I did with my good old Nexus and never got any major problem.
As of now, the performance on stock LG Lollipop is good, but everything is so bloated and I can't live with only 24 GB of storage. I also heard that there is a camera mod that allows the G2 to take slow-motion video and 4K photos so I would like to try that out.
Well, I've been searching here but everything is so confusing that I decided to only step into things when I understand everything about them and there's no risk of bricking the phone again. The Galaxy Nexus subforum is easier to get the hang of because there is only 3 versions of the phone (GSM and CDMA sprint and verizon). This one has like 7 and I kinda lose sight of what I need to check on.
TL,DR: Please check my questions below. (I put the important text bold)
http://prntscr.com/73hrp9 --> Those 3 sections... what's the main difference between them? Where should I look for roms for my device? What happens to the phone if I accidentally flash v30a stock or some custom rom for another version of the phone? Will it brick or bootloop or just some things such as network connection won't work?
I have a spigen slim armor case but the aluminium back is pretty damaged. Does anyone know if they still support the G2 in terms of acessories? I would want to replace the aluminium part of the case and maybe buy some screen protection. I know I can ask this and look for this in the acessories part but I found many topics with too much spreaded info and nothing convincing enough. What do you recommend for screen protection? iloome doesn't support the G2, I've seen the Glass-M and Ultimate Shield... Is there more options?
What can led to a brick in my device? How can I avoid it? Please don't tell me to not flash any custom rom and just stick with the stock. I want to try out new things, I just need to know where and what should I look.
I don't get the recoveries here! I have TWRP installed, but for what I've read there are more than 1 version of TWRP. They vary from the way I install it and they can be lost if I flash some kinds of roms. This doesn't happen with the Galaxy Nexus, TWRP is TWRP and CWM is CWM and stock recovery is stock recovery. What really happens in the G2 and what kind of recovery should I have to always have a anti brick backup plan?
What about the camera mod? Can I use it with stock lollipop? Can I use it with another custom roms? Do camera quality decrease with custom roms as they don't have lg software to process the images?
Well, I know the policy here at XDA is for searching and doing things ourselves as this is a developer forum and not a support forum. But as I learned what I should and should not do with my previous phone, I'm hoping to have a similar experience with this one without having to experience any more bricks and problems. That's why I'm asking before I do crap just because I didn't notice the small letters at the end of the post, or the comment #252652 of the thread of a user warning that the thing I'm doing will result in a bad experience. I'm just having some precautions and asking things directed to more experienced users who have the phone longer than me and can answer easily.

Flashing a Nougat ROM with MultiROM from 4.4.2

Hi all,
I just found my old Nexus 7 (2012 model) in a dresser drawer and decided to bring it up to speed. Currently it is running what appears to be a stock (maybe debloated) 4.4.2 with root and multirom. Recovery is TWRP for multirom. I was using multirom to run Ubuntu just for kicks, but have lost interest in that project, plus it now appears to no longer be supported. Now what I want to do is just flash one of the nougat based roms and call it good. When I try to add nougat as a second rom I get errors relating to E: not existing, it then deletes everything that just started to install. Posts I've seen in other hardware forums point to maybe the install script being wrong for multiboot. Is there any weight to this idea?
I want to run one of the new roms as a secondary first to see how well it works before flashing it for good. Am I missing something stupid here? I haven't messed with any of this stuff since I switched to Verizon and could really use some help.
I don't really need the multiboot option, but since I've gained it I'm a little slow to want to give it back up. Would it be easier for me to just reload the bootloader, recovery, etc, take it back to stock and start over?
Atari-San said:
Is the support of Multiroms dead or do they plan a patch for nougat later when it get more mainstream? I am currently running dirty unicorn 7.0 since I just got my screen and would like to have older build for compatibility issue.
Click to expand...
Click to collapse
If you wan Android 7 on your Nexus 7 2010 you can't use MultiROM: https://forum.xda-developers.com/showthread.php?t=2011403&page=316
Without MultiROM you can use this Android 7 ROM: https://forum.xda-developers.com/nexus-7/development/rom-lineageos-14-1-nexus-7-2012-t3530261

Lg G2 VS980 wont go past Lollipop for me?

I need some help, anyone, please! I have a Lg G2 VS980, rooted supersu by chainfire version 2.79 latest, i guess. twrp 3.2.0-1 by blastagator, and running resurrection remix 5.4.7(Lollipop 5.1.1) from stock rom VS98024a which i pushed with lgtool14, i believe. From stock VS98011a which i also installed a year ago when my ParanoidAndroid os Lollipop rom 5.1.1 just stopped working all together dont know why, still. tried flashing over that with lollipop CrDroid rom Lollipop 5.1.1 when the phone bricked. So I proceeded to start from scratch again learning as i go, im kinda good like that sometimes. so i did all of this all is working well and good again, except for one thing, when I try to flash any custom marshmallow even nougat roms they install like the lollipop ones fine, matching micro Gapps packages every time for marshmallow and nougat roms. wipe the dalvik and cache properly, all is good til reboot of the system. Lg logo comes up then black screen and nothing else ever, Ive let it sit for hours and nothing. i dont know what i am missing here i know its possible to go past lollipop but im at a loss here. ive searched til my eyes bleed but there is no comprehensive guide on how this is accomplished and what to do with the black screen issue im facing. i dont know if i need to do a bootstack change or something else i dont know about. If i could get some guidance here maybe a solution to this issue. hell i dont care if i got to start from scratch again. something guys. if you need any info i havent provided ask. and yes i have all the proper latest drivers, adb, fastboot, and even latest android studio from google, which i dont have a clue as to how to use. im not a noob but by no means a developer, lol.

Moving to LineageOS worth it (and possible) from Cloudy G2.2?

I've been running Cloudy G2.2 for a year an a half. It's given the phone enough legs to mostly make it through 2017. However, about every other week I have to restore my latest backup when Bluetooth stops working because it saw too many devices. This wouldn't be terrible if it wasn't for Authy refusing to sync my newer 2-Factor auth accounts. I think I've convinced myself that the G6 (US997) is my next phone, but now is a silly time to buy as the price should drop like a rock as the next wave of flagships come out.
I'm hoping to make it another couple months and was wondering anyone's experiences moving from Cloudy G2.2 (or other ROMs) to the latest lineage? From what I've read, it's very stable. However, I'm on Kit Kat bootloader, so it doesn't seem like this will be a straightforward process. I was hoping to get some experiences from people who made the same move before starting.
I currently have:
LG G2 D800
Root using stumproot (I think, it's been a while) with supersu installed
TWRP 2.7.0.0 installed by autorec
Cloudy G2.2 KOT49I
So, after some research, I set off to install LineageOS. In hindsight, this might have been a bad idea since it specifically only mentions the D802 in the title. However, it listed links for D800 builds, though they were crossed out.
I updated TWRP to this version by Blastagator and that was painless. I then wiped the phone, made a fresh backup and flashed the latest nightly of LineageOS, and the latest GApps (Mini) for 7.1. That was disappointing since I got the quick "LG logo" followed by a blank screen, that I later found was mentioned in the same Lineage post. Should've read farther.
I think the issue is that I'm on the wrong bootloader. I thought I was on KitKat which the post requires, but in order to enter recovery, I have to press enter three times (rather than using volume buttons to navigate), which indicates I'm on JellyBean bootloader.
So, this is the scary step that I was hoping to avoid. My big fear is that I run Linux on my desktop, so I can't use the LG Flash Tool. As long as I can keep a working recovery, I have backups, so I'm fairly safe. Following the Blastagator bootloader post, I'm not really sure how you go back and forth between bootloaders so easily as it suggests. Is that really as simple as loading the zip file on the phone and installing it in TWRP?
Is there a safer way to handle this?
From my experience, it is that easy. Simply install the zip file and you have loaded a new boot loader. Also, I was in the same boat as you with Cloudy rom and moved to Nougat with crDroid. However it's not stable and I am considering looking for something else more stable but fast like crDroid.
ernie young said:
I was in the same boat as you with Cloudy rom and moved to Nougat with crDroid
Click to expand...
Click to collapse
When you updated your bootloader, were you still able to run the Cloudy ROM before you switched to crDroid? Once I flash the KitKat bootloader, am I only able to use the Nougat ROMs? My big concern is that there might be something a bit off with my bootloader, so I won't be able to get back to TWRP.
I think there's something a bit off with my bootloader as is, because about a year ago I flashed back to stock Jellybean, and took all the OTA updates. However, when the phone tried to take the KitKat update, it softbricked, and could only be recovered using the LG Update Tool, which I don't have access to anymore. Because of this, I'm a little worried that just dropping on the Blastagator KitKat bootloader may have some atypical issues.
i m using it for a while. u know, on Los you won't be able to use lg features such as qslide, qmemo, plug&pop, knockcode etc. Only worth it if you want your phone to look a little bit fresher and lighter or you need a newer android version for some reason. Else, don't take the risk if you can't use flashtool. You can consider installing another kitkat rom. There are lots and they are nice :]
S YILDIRIM said:
or you need a newer android version for some reason.
Click to expand...
Click to collapse
My primary issue is that KitKat (or whatever Cloudy G2.2 is?) has the old Android bluetooth bug where once it sees too many devices, it stops connecting to anything. I have to make sure to turn off my phone if I go somewhere like an airport, and have been having to restore my clean Cloudy backup about once a month. It's getting pretty frustrating. On the other hand, I'm hoping to upgrade to an LG G6 (US997) in a month or two when the V30 release pushes down on prices. So, if it's a case of potentially hard-bricking my G2 at the worst possible time, I should hold off flashing.
I think you need hybrid bootstack for android 7.
WORF84 said:
I think you need hybrid bootstack for android 7.
Click to expand...
Click to collapse
That makes sense, but will I not be able to use my Cloudy 2.2 backup after that? It says that the hybrid bootstack will only boot CM 12.1, CM13, and LP stock roms.
superlou23 said:
That makes sense, but will I not be able to use my Cloudy 2.2 backup after that? It says that the hybrid bootstack will only boot CM 12.1, CM13, and LP stock roms.
Click to expand...
Click to collapse
These questions if this works with that or that are easier to answer for yourself by reading what goes with what.
Just Google LG G2 bootstack and you can probably find the ones you need for any available rom.
I use hybrid on Marshmallow 6.0.1 but I tried Nougat 7.1.2 too, it works.

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