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BQ78Z100: Customer want to upgrade firmware to v0.05

Part Number: BQ78Z100

Hi ,

     Customer got older version chip, the hardware version is 0x0A and firmware version is 0x04.

Their golden sample was based on hardware version 0xa2 and firmware version 0x05.

Could they direct overwrite the firmware from version 0x04 to 0x05 ? I ask this question because 

they are different hardware version.

Thanks