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BQ40Z50-R1: FW version upgrade and downgrade questions.

Part Number: BQ40Z50-R1

Hello Sir:

If we build a new .srec file by using R2 device, then we program this .srec to R1 device directly, does this R1 device will be R2 device? Any side effect?

If converse, we use R1 device to build .srec, then program this .srec to R2 device, does this R2 device will be R1 device? Any side effect?

Please help to provide your recommendations for us.

Thanks a lot.