1.Update security patch
2.Update APN list
Steps of Update:
1.Check software version of your device**
2.Download device software and Update SOP (From “Manual” Item
3.Only apply to same SKU update, Example: WW->WW, CN->CN, JP>JP.
4.Software update cannot transfer the software SKU and downgrade the software version.
5.Wrong SKU may cause update failure, please update the same SKU version only.
*How to know the device model?
Path: Settings->About-> Model number
**How to know the device software version?
Path: Settings->About-> software information->Build number
***System upgrade may cause part of data missing, please backup your important data before system
Notic: Please keep in mind that, you must flash - firmware at your own risk and also full responsible with you.