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nRFgo Studio and nRF52840 programming

Hi Everyone,

I just purchased an nRF52840 PDK and I am trying to program it via nRFgo. I erased the flash, selected the latest s140_nrf52840_5.0.0-3.alpha_softdevice.hex and using the soft device tab I try to program it on the PDK. I get this "The flash is not erased" message which is strange because I just erased the flash and the flash erase operation was confirmed:

image description

Any suggestions are greatly appreciated!

Thanks!