nRF51822 Bootloader Download Problem with nRFgo Studio

[Nazmus Sakib]

Hi All.

I am trying to download the Bootloader to nRF51822 Dev Kit using nRFgo Studio (32 bit, v 1.15.1.2691) but getting an Error.

"ERROR: Attempted to write to UICR page while programming application"

Before download the "bootloader.hex", I Erased the chip and downloaded "s110_nrf51822_6.0.0_softdevice.hex".

Looking for your advise.

Regards.

[John]

If I recall correctly, the nRFgostudio cannot write the UICR register and the bootloader programming needs to modify UICR. You can program it using the command line tool nrfjprog. I program mine with the following command "nrfjprog --program bootloader.hex --reset". If you search the forum, there are several rather good articles that go into more detail on this.