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Hi Sir,
           Can the  "erase all flash" option if ticked can delete the boot-loader of p89v51rd2bn micro-controller.If so,then how can i reprogram the IC chip  for another new set of  hex fix.

Thanking you
Tanumoy

Hello Sir/Madam
                         After reading some of the Post in the forum I found out using a multimeter that PIN 5 of serial cable has +10V with respect to pin 3 of serial cable so it may lead to a floating gnd problem in the ckt,and also the flash magic is unable to program the microcontroller its showing message box of reset option when i push start buttom but when i am pressing the reset buttom its not responding to it.
                                                Even I have a shock sensation felling when i touch the gnd terminal of the ckt(After joining the gnd of serial cable to the 5V Ckt GND)
                                                PLEASE help me to solve this problem.I am using a desktop PC.
                                                                                       Thanking You
                                                                                        Tanumoy