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BQ4050: Is it possible to upgrade this chip to bq40z50R2 ?

Part Number: BQ4050
Other Parts Discussed in Thread: BQ40Z50

Hello

I'm evaluating a borad based on bq4050 and studying the CEDV implementation.

I realize that the chip looks pin to pin compatible with bq40z50 (impedance track), so I'm wondering if it is possible to obtain an a valid bq40z50R2 with just a firmware upgrde uploading the related SREC file.

Is it possible ?

Thanks in advance

Pietro