What is this,?

Model: ZC550KL(Max)
RAM: 3G
Firmware/APP Version: 13.8.26.113
Frequency of Occurrence: 113
Rooted: No
APP Name:
Give solution, please
RAM: 3G
Firmware/APP Version: 13.8.26.113
Frequency of Occurrence: 113
Rooted: No
APP Name:
Give solution, please
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Comments
I shall perform Battery calibration,also.
Sot is only 6 hrs.
Give reply,ASUS
How to dawngrade zc550kl,model without PC ?
Can anybody having solution ?