hello all:
i have one question for bq20z70.
yesterday i want to read the unsealkey(0x60) and the fullaccess key(0x61) of one pack integrated the bq20z70 with two series one parallel. however,in the "pro" interface, when i wrote the 60 or 61 in the box of "read smb word" or "read smb block" or "send smb command", the system told me that "smb write command,error code:no acknowledge:vb_t2h_nack" or "smb read command,error code:no acknowledge:vb_t2h_unknown" .
what happened of the smb bus? i had reboot the computer and re-plug the usb port,but it didn't work, the problem is the same as before.sorry for that i can't upload the picture because of the network limit.
i wanted to unseal the pack and go to the full access mode then read the dataflash, is there any other way to know the unseal key and the fullaccess key? or other methods to read the dataflash?
thank you.