Problem using the 89V51RD2

[pateliasanjay]

1.Uploaded Boot loader version from 5 to 7
2.Changed read device signature option to Factory Default.

But i am receiving following message."Read Device Signature does not match the expected values,Accessing the device using the wrong protocol may ...................

Please help me out

[Andy Ayre]

If you go to ISP -> Read Device Signature what do you get?

Did you program the correct hex file of the v7 bootloader? Using the wrong one might change the device signature.

Andy