I am using Microsoft Lumia 540. I updated my Lumia with insider updates from fast ring. Now my phone is showing three problems.
- Lock screen buttons are disappeared, that's why I am unable to input 4 digit PIN.
- Not connecting with WI-FI.
- Not connecting with Cellular Network.
When I connect my phone with charger it automatically shutdowns and starts again and again.
How can I roll back from this update without signing in? OR is there any way to sign in without accessing lock screen???