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Bq20z75 with wrong .DFI

Jason He1
Prodigy 20 points

Dear all,

I would appreciate any comments to the following question:

At first,  Bq20z75 was sealed. I try to unseal it by using the different version .DFI file. 

After programming  Dataflash Image(.DFI file), BqEasy can't recognize the Bq20z75 chip.

What can i do to recovery the communication and unseal it?  

Error message shows as follows figure:

Thanks a lot.

  • 0
    TI__Guru* 76230 points

    Hi Jason,

    You are supposed to use the unseal keys to unseal and not the DFI file. Also If you are in sealed mode I don't think you will be able to program a DFI file without first unsealing the device. 

    If the device is in ROM mode and you can't exit ROM mode by sending command 08, I suggest replacing the IC.

    thanks

    Onyx