LGVS840 security error

[sdowney717]

Ok, I must have unwittingly made an error using a kingroot app as now the phone after a rebbot gives a securtiy error.

I tried using LG support tool and clicking recover phone about 6 times. It downloads 670mb to the PC, but then when uploading to phone it just quits displaying ????????????????? on the tool screen.

So what to do?

 

[sdowney717]

The android files that program downloads are corrupt, so it fails. I posted my fix in the sticky thread at top of this forum and it is working again. The LG support tool downloads a damaged 675 mb file and LG, they don't care to make it right?
I tried that support tool about 10 times.

I finally downloaded that large file from a google drive account which was not corrupted.

 

[sdowney717]

After fixing the phone it has 2 errors.
Play store refused to run, I downloaded a new APK file, and got it working.

Picture images in contacts dp not appear AFTER going through the add image procedure.

And the contact list restored from Verizon was messed up badly, we gave up trying to fix contacts, it kept syncing back weird stuff. Verizon tier 2 tech support was a little help but they just read from a book. No explanation for having 5 or 6 replicates of contacts.

 

[Lookchup]

Did you root the phone and try removing some apps (one cause of problem)

which ever way you need to flash a stock rom to make it work once again.................you can learn all there is about that from the link below.
Please do read about three (3x) before starting anything to be sure.