Use nRF Connect v2.6.0 on Linux to erase, program softdevice.
Use Keil to program application firmware
Does not work:
Use nRF Go studio to detect the DK, detected serial number, but no device is detected.
Use nRF Connect v2.6.1 on Windows 10, showed error : "Error while probing devices: Error occured when get serial numbers. Errorcode: CouldNotLoadDLL (0x3)"
Use Keil to download Softdevice
Load "..\\..\\..\\..\\..\\..\\components\\softdevice\\s140\\hex\\s140_nrf52_6.1.0_softdevice.hex" Set JLink Project File to "C:\Users\Projects\nordic\nRF5_SDK_15.2.0_9412b96\examples\ble_peripheral\ble_app_blinky\pca10056\s140\arm5_no_packs\JLinkSettings.ini"* JLink Info: Device "NRF52840_XXAA" selected. JLink info:------------DLL: V6.40 , compiled Oct 26 2018 15:06:02Firmware: J-Link OB-SAM3U128-V2-NordicSemi compiled Jul 12 2018 11:44:41Hardware: V1.00S/N : 683514616 * JLink Info: Found SW-DP with ID 0x2BA01477* JLink Info: Found SW-DP with ID 0x2BA01477* JLink Info: Scanning AP map to find all available APs* JLink Info: AP: Stopped AP scan as end of AP map has been reached* JLink Info: AP: AHB-AP (IDR: 0x24770011)* JLink Info: AP: JTAG-AP (IDR: 0x02880000)* JLink Info: Iterating through AP map to find AHB-AP to use* JLink Info: AP: Core found* JLink Info: AP: AHB-AP ROM base: 0xE00FF000* JLink Info: CPUID register: 0x410FC241. Implementer code: 0x41 (ARM)* JLink Info: Found Cortex-M4 r0p1, Little endian.* JLink Info: FPUnit: 6 code (BP) slots and 2 literal slots* JLink Info: CoreSight components:* JLink Info: ROMTbl @ E00FF000* JLink Info: ROMTbl: E000E000, CID: B105E00D, PID: 000BB00C SCS-M7* JLink Info: ROMTbl: E0001000, CID: B105E00D, PID: 003BB002 DWT* JLink Info: ROMTbl: E0002000, CID: B105E00D, PID: 002BB003 FPB* JLink Info: ROMTbl: E0000000, CID: B105E00D, PID: 003BB001 ITM* JLink Info: ROMTbl: E0040000, CID: B105900D, PID: 000BB9A1 TPIU* JLink Info: ROMTbl: E0041000, CID: B105900D, PID: 000BB925 ETMROMTableAddr = 0xE00FF000* JLink Info: Reset: Halt core after reset via DEMCR.VC_CORERESET.* JLink Info: Reset: Reset device via AIRCR.SYSRESETREQ. Target info:------------Device: nRF52840_xxAAVTarget = 3.300VState of Pins: TCK: 0, TDI: 1, TDO: 1, TMS: 1, TRES: 1, TRST: 1Hardware-Breakpoints: 6Software-Breakpoints: 8192Watchpoints: 4JTAG speed: 1000 kHz Erase Failed!Error: Flash Download failed - "Cortex-M4"Flash Load finished at 10:26:34
nRFgo Studio is no longer supported, so it might not work for newer versions of Windows etc, I suggest that you use nRF Connect Programmer.
Which application in nRF Connect have you opened?
Are you able to use nrfjprog?
Here is my Flash Download setup:
I tried to use "Programmer" application within nRF Connect and error ""Error while probing devices: Error occured when get serial numbers. Errorcode: CouldNotLoadDLL (0x3)" shown when opened.
With KEIL, there are 2 targets for selection:
nrf52840_xxaa, whose target configuration contains 2 Flash download algorithms like the screenshot you showed.
flash_s140_nrf52_6.1.0_softdevice whose target configuration contains 1 Flash download alogorithm like the screenshot I provided. Notice that there is no more flash algorithm when clickg the ADD button, in the screenshot I also showd.
Every single KEIL project is setup this way, and in the documentation, they specifically said the "flash_s140_nrf52_6.1.0_softdevice " is the target selection for downloading softdevice.
Can you try to program the SoftDevice using nrfjprog?