Simple guide to go from 35b without TWRP to 46A marshmallow

[roirraW "edor" ehT]

Thanks for the reply. Now I flashed it from twrp and install super su from within 46A method. In the phone setting, the device is official but in stump root, it shows device is rooted. How can I root 46A version and how can I delete version softwares?

I don't understand. If you flash @xdabbeb 's stock 46A ROM, it's already rooted and includes SuperSU. Stump root doesn't work with anything after 10B. And what do you mean "delete version softwares"?

 

[ultima40]

Everything works for me but my phone freezes at the Verizon splash screen if I try to encrypt my phone. I have a PIN set. Any suggestions?

 

[APeter001]

This may not be the best place to ask this but what if you are on 24b with root? Is there an easy 'start here' point to upgrade to MM with root?

 

[roirraW "edor" ehT]

This may not be the best place to ask this but what if you are on 24b with root? Is there an easy 'start here' point to upgrade to MM with root?

If you don't have TWRP yet while on 24B, use @bender_007 's autorec TWRP app to install TWRP, and then manually download the latest TWRP, reboot into TWRP, and flash the new version from the old version. Don't use the autorec TWRP app in the Play Store - that's only for 23C. You have to find his autorec TWRP thread in one of the non-variant-specific G3 sections - I think General and download the 24B for VS985 app directly from the first post. Note that the first time you launch the app it may appear frozen for a short while. First it'll request root permissions, once you grant them it'll then automatically make a backup of your current partitions that it's about to replace, after which then you can click on the on screen button to install TWRP.

Once you have TWRP - either v2.8.7.0 or 3.0.0, then use the built-in LG Backup to back up your user apps, user data, and limited system data. Boot to TWRP, wipe Cache, Dalvik/ART and Data, flash @xdabbeb 's stock 47A firmware along with any optional debloat zips you want to (from that thread's third post or my signature below), then flash the 35B Bootstack.

You can then use the built-in LG Backup to restore what you want from the backup you made earlier.

 

[Sumaech]

Will this work if you at starting on 12b?

If you are on 35b (rooted or unrooted) without TWRP here is a simple guide to get TWRP and rooted Marshmallow 46A on your phone. This is all info available in various threads here on XDA (typically mentioned by roirraW "edor" ehT) and I take no credit for any of this work. After going thru the process yesterday I simply thought it would make it easy for others to find everything in one place with links. Standard disclaimer : use this method at your own risk

1.Use the TOT method to return to 10B (backup your data, this will wipe your phone) http://xdaforums.com/verizon-lg-g3/general/restore-verizon-to-stock-t2827878
The most helpful posts in this thread were the OP, #9 and #236 note: if this doesn't work for you look here http://xdaforums.com/verizon-lg-g3/general/ks-version-error-downgrade-trouble-t3306028

2. Root your phone (now on 10B) using Stump http://xdaforums.com/lg-g3/orig-development/root-stump-root-lg-g3-sprint-verizon-t2850906

3. After rooted Install SuperSu https://play.google.com/store/apps/details?id=eu.chainfire.supersu&hl=en

4. After SuperSU is installed install TWRP using TWRP manager https://play.google.com/store/apps/details?id=com.jmz.soft.twrpmanager

5. Reboot into TWRP recovery and factory reset (just to be safe)

6. Flash 35B bootstack from TWRP recovery http://xdaforums.com/verizon-lg-g3/development/xdabbeb-s-vs980-2-0-0-t3231279

7. Wipe data/cache within TWRP

8. Flash 46A in TWRP link to stock http://xdaforums.com/verizon-lg-g3/development/vs985-46a-stock-flashable-firmware-t3304365 Or use the rom of your choice

9. Reboot to system (do not install superSU from TWRP if using the link above)

For ease of installation I suggest downloading everything to your PC first then create a folder on your SD card called flash and copying the needed apk and zip files to that folder before you get started. This way you won’t have to sign into your google account in 10B to download the APK for SuperSu and TWRP manager. Use apkmirror or a similar site to download what you need.