[Shield Tablet Q&A, Help & Troubleshooting] Ali Ejea Mc:
Reset Factory Settings From Safestrap Recovery or Restore/Flash the Stock ROM

This Solution Consist of 3 Possible Solutions... You Should Try Them 1 by 1. It Means That If first Method Does Not Work Then Try the Next One. First Method Is Not Risky, Second One Is Slightly Risky and Third One Is Risky. But If You Follow All The Steps of Any Method Carefully Then There Might Be No Risk.

But Just In Case I Request You Guys To Tag Any Developer Who Is Working On Safestrap TWRP Recovery To Approve The Second And Third Methods Of This Post, I Just Wanna Make Sure That Your Devices Are Safe. It Worked For Me On Amazon Kindle Fire HDX But In This Case We Are Working On Nvidia Shield Tablet.

NOTE for owner of this Thread...

If this solution works for you or not or if you don't wanna follow the steps below then please do not delete this Thread because it can help someone else.

Method #1

Well if you have access to playstore then download "GMD Autohide Soft keys" or any alternative app. You can activate Soft Buttons by using those Apps. in case you don't have access to Playstore or Those Apps do not work then try the next method.

Method #2 (Factory Reset From Safestrap Recovery)

You should follow this method only if you have Safestrap (TWRP) Recovery on your device. got it? ok..

Now make sure that you have a Backup of Stock ROM on your Device if you have made it in the past, you can find it in TWRP folder. And also make sure to download a .zip file of compatible Stock ROM. Actually we are gonna Restore Factory Settings from Safestrap Recovery, don't worry it is not as risky as you reset to factory setting from the Settings of your device. just make sure that you have a Backup or Flashable .zip file of compatible Stock ROM on Internal or External memory of your device. You can Download it by searching on Google or from other Threads related to Nvidia Shield K1. Got this stuff? ok now...

Boot into Safestrap (TWRP) Recovery (using ADB commands or any other method)

Once you are in Safestrap tap on WIPE... you will see 3 options...

1- Advanced Wipe

2- Format Data (never select this option, NEVER EVER!)

3- Swipe to Factory Reset

we are gonna select option number 3.

so in the bottom of screen you will see "Swipe to Factory Reset"... Swipe it to restore factory settings... is it done?

now go back to home screen of TWRP Recovery and tap on REBOOT... now tap on SYSTEM... your device will reboot to System (Android). Is your problem solved? it should be... if yes then congratulations :)

if not then follow the Method #3....

Method #3 (Wipe System and Restore or Flash it)

Again make sure you have Backup and .zip file of Stock ROM on internal or external memory. got it? follow me...

in this method we will Wipe (Delete) System and then Restore the Backup or Flash The zip file of Stock ROM. so...

Boot into Safestrap again.

Tap On WIPE

Advanced Wipe

(now you will see four available options to select)

1- Dalvik Cache

2- Data

3- Cache

4- System

Select System and Cache (do not select Data option)

now in bottom of screen you will see "Swipe to Wipe"

Swipe it and once it is done go back to home screen of Safestrap

Now you can do ANY ONE of the following two steps.... you can either Restore the Backup or Flash the .zip file. But do not do both of these steps, choose only one step!

Step #1 Restore Backup.

tap on RESTORE... it should directly take you to the Backup of stock ROM. Swipe to Restore... once it is done. Boot into System. if everything goes fine then your problem should be Solved now. Congratulations :)

Step #2 Flash Stock ROM.

tap on INSTALL (in Safestrap Recovery)

Now you will see some folders, so here find the .zip file of Stock ROM which you have downloaded. found it? ok now tap on it and you will see "Swipe to Confirm Flash" so swipe it. once done reboot to system. and congratulations you have solved your problem :)

hope it woks for you... if so then Subscribe to my channel on Youtube. Search Ali Ejea Mc and you will see my channel or videos on top. I am gonna change the name of channel so you better search Ali Ejea Mc

My Devices:

Nvidia Shield K1

Kindle Fire HDX