How to debug nRF24LE1 board using JTAG port on nRF6310 board ?

Question

Hello Nordic, 
 I tried to debug my board using the JTAG port (P12) on the nRF6310 motherboard. But it's not possible to flash the chip in Keil. I got the error: "Error: Flash Verify Failed at 0x0000" every time I pressed Download. 
 I already chose the "Program device through the JTAG interface" option in the nRFPRobe Settings. 
 I had everything connected, an external power supply, GND and VEXT is connected. 
 Please help, thanks.

Hung Bui · Accepted Answer

Hi, 
 It's most likely that you haven't set the debug byte in the Infopage to enable the JTAG programming and debugging. 
 You would need to use the ISP interface to flash the chip with the " Enable debugging (set debug byte in info page) " option. After that you should be able to flash and debug the chip with your JTAG connection. 
 And please don't forget to turn the debug bit off with the ISP programming again after you finish debugging. Otherwise the chip will not start up normally but enter debug mode instead. A power reset would not help :)