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BQ2084-V143: Does any one know the default full access key for bq2084? and how can I determine which mode I am I?

Part Number: BQ2084-V143

Does any one know the default full access key for bq2084? and how can I determine which mode I am I?

I have written 2084 7a43 unseal the key to 0x00, then reading 0x2f show I am unsealed.

and I want to enter full access mode. anyone knows default key?

and how can I kown I am in full access mode?

and how to enter/exit boot rom mode?

where to get documents about bq2084 extended sbs command ? such as 0x50, 0x60 command.