[jj14x]

Couple of questions
1. How can I do a PRL update on this?
2. The battery charge indicator light goes green when the battery has reached 91% or so (when the light goes green, the lockscreen shows 91%). Leaving it on the charger for about 30-45 minutes gets the charge to 100% (light continues to stay green), but as soon as I disconnect from the charger, the charge instantly drops to 98%. Does the battery need to be re-calibrated?