[G2 General] KiaTheKing:
First of all welcome :) This is one Noob Friendly GUIDE from me, like title says... If theres anything u need feel free to reply in this thread..

Hope everyone here know how to flash ROM, but there re people that still ask me how to flash some ROM, this is guide for them :)

If youre on 4.2, you should upgrade to 4.4.4 : http://xdaforums.com/showthread.php?t=2432476 (recommended)

https://www.youtube.com/watch?v=0-TZ347tasw&list=UUny-iARLnbyw1OVIaQhi3Pw (one OLD guide but it could help, follow first link it is recommended)

ROOT:

First of all you`ill need to root your device:

Downloads for root: http://pastebin.com/RBHHCtvH

Source : http://xdaforums.com/showthread.php?t=2448887

Thanks [MENTION=1157052]thecubed[/MENTION]

I think the easiest way to install recovery is to install TWRP using AutoRec app, yeah you could do the same things (flashing/wiping etc..) by installing CWM from TWRP or installing just CWM from adb or however :)

TWRP:

Source: http://xdaforums.com/showthread.php?t=2715496

Downloads: http://bit.ly/g2_AutoRec

Thanks to: [MENTION=270378]Cloudyfa[/MENTION]

And: [MENTION=3279781]bender_007[/MENTION]

Now:

Boot into TWRP/CWM Recovery (Shut down your phone, Press and Hold Volume - and POWER till you see the LG logo appears, then immediatly let the keys and hold them again till you see message about factory reset, just press power button 3 times, dont worry it will not factory reset your phone, it will bring u to recovery :) )

Go to Install/flash .zip/Rom (name) .zip and swipe or press YES and it will says: Reboot device? go to NO

Now you should flash Gapps, repeat same proccess ( Install/flash .zip/name_gapps.zip ) (GAPPS stands for Google Apps... That includes stuff like the gmail app, google maps, google goggles, etc. ) Do not reboot device, stay into recovery :)

Now you should do full wipe: Go to advanced/wipe/check: data and swipe (if ure using CWM go just to YES)

Go to advanced/wipe/check: cashe (if ure using CWM go just to YES)

Go to advanced/wipe/check: system (if ure using CWM go just to YES)

Go to advanced/wipe/check: dalvik cashe (if ure using CWM go just to YES)

If it is asking you for installing root, press yes if u wanna root on your device :)

Yeah finnaly you can reboot your device and enjoy new system :)

Links to 5.0 (Alpha versions):

CM12 (most stable version, recommanded) : http://xdaforums.com/lg-g2/development/rom-cyanogenmod-12-0-lg-g2-t2944269

CM12 : http://xdaforums.com/lg-g2/development/rom-cyanogenmod-12-lg-g2-t2944935

LiquidSmooth 4.0 (one more stable L ): http://xdaforums.com/lg-g2/development/rom-liquidsmooth-v4-0-lg-g2-t2948395

Link to my youtube channel (instead pressing donate link you can just subscribe, if u want :) )

https://www.youtube.com/user/KiaTheKingPRODUCTION

Link to VIDEO GUIDE:

https://www.youtube.com/watch?v=aIdYDsgkNLY&feature=youtu.be

Link to CM12 video review:

https://www.youtube.com/watch?v=Y1W43rGy9hA&list=UUny-iARLnbyw1OVIaQhi3Pw

Link to LiquidSmooth 4.0 video review:

https://www.youtube.com/watch?v=XbgtCgPPqDg&list=UUny-iARLnbyw1OVIaQhi3Pw

There are some mistakes, forgive me ...

Mods, ill add a lot here and answer all questions, so be patient, thanks.