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BQEVSW: Problem unsealing BQ33100

Part Number: BQEVSW
Other Parts Discussed in Thread: BQ33100

Hi, I recently asked question on gaining access to data flash on BQ33100

Now I can adjust the data on data flash screen, but I'm unable to use commands on pro screen.

I get an error message vb_t2h_nack. I suppose this is because the device is sealed.


In order to unseal the device, I read the hex value that smb command 00x60(unsealkey) returned. It was 14 04 72 36

Then, I wrote the key in inverse to the smb command 00x00(manufacturer access). I wrote as 04 14 36 72

Even after these steps I still got the VB_T2H_NACK message that I tried again the same value at the 2 word write command on sbs tab, but I still can't gain manufacturer access.

Please review this problem asap, thanks.