Fail to program the read back HEX file via nRFgo studio

[stephen]

Hi there,

I could program the HEX file to nRF51DK via nRFgo studio successfully and the board seems to work fine as well. And then, I try to read back the HEX file from the same nRF51DK, the tool shows "Read successful". And then, I program this read back HEX, but the tool shows "programming failed: The flash is not erased". So, then I program the original HEX, the tool shows successful and the board work fine again.
anyone know Why?

The following is the print screen cut of error message. Besides, two HEX files are also attached. blinky_original.hex
blinky_readbak.hex

board: nRF51DK
chip: nRF51422 QFACA10 (0x0086)
nRFgo version: 1.21.2.10
OS: win10 64bit
example: blinky (w/o softdevice)

[Joakim Jakobsen]

Hi stephen!

If you erase the second last line of the blinky_readbak.hex and then flash the hex-file it should work. The line you should remove is: :0400000000FFFFFFFF.

I don't quite know why this line gets added, but I will take a look at it and I will edit my answer if I can find a better solution for you.

Best regards,
Joakim.

[stephen]

It works, thanks a lot!

[Joakim Jakobsen]

No problem, happy to help!

[liujirong888]

Hi Joakim,

        what about the softdeivce?

the readback hex don't have the line"0400000000FFFFFFFF." 

What should I do?softdevice_readback.hex3323.s130_nrf51_2.0.1_softdevice.hex

[Joakim Jakobsen]

Hi!

I don't have any problems reading the softdevice. It doesn't cause any errors, and I can use it with the examples.

Maybe you could post a new thread here on devzone explaining this issue closer?

Best regards.