1. Update APN settings
2. Improve stability
Steps of Upgrade:
1. Check Image version of your S500 if it's WW_GEN1
2. Download EUU file for the same SKU with your S500 and Upgrade OS
※OS upgrade cannot do *SKU conversion* and downgrade version.
Wrong SKU may cause update failure, You can only update your Image version on the Same SKU
*How to check Image version of your S500?
Path: [Settings]-->[About Phone]-->[Image version]
*How to check SKU of your S500?
The SKU is showed on the last of image version.
For example, Acer_AV043_S500_RV01RC01_WW_GEN1, the SKU is WW_GEN1
Acer.AV043.S500.RV16RC01
USB 2.0 Driver
Kernel Source Code (Android 4.0 Ice Cream Sandwich)
.
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