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BQ27742-G1: Can't clear FAS flag after sending Full Access Key

Shane Ke
Intellectual 255 points
Part Number: BQ27742-G1

Hi, 

In bq27742 G1 device, I met one problem that FAS flag still set after sending Full Access Key.

I checked the default unseal key 0x0414 , 0x3672 and full access key  0xFFFF, 0xFFFF, it is work

However, the issue seems to happen if one word of "Unsealed to Full" same as "Sealed to Unsealed" like "5000".

I have changed unseal key and full access key as below, the number FFF5000 of "Unsealed to Full" is invalid. How can gauge goes back to full access mode?