not able to debug nRF9160 DK getting error "Failed to download application Generic error"

Question

Hi, 
 
 My working environment: 
 NCS folder Tag:v1.2.0 
 J-Link version : v6.62a 
 SES version:4.42a 
 test sample code:\NCS
rf\samples
rf9160\cloud_client 
 nrf connect environment option:

When I tried to debug by pressing F5, I am getting error as 
 "Failed to download application Generic error,Please check J-link and target connection" 
 
 Not able to enter into debug mode.Can you please help how to debug a code.

Torsten Rasmussen · Accepted Answer

Hi, 
 We have so far discovered two issues. 
 One is the J-Link shipped with SES 4.42a seems to have problems with the flash operation. 
 Currently I have verified that downgrading to J-Link 6.50, that is replacing `JLink_x64.dll` and `JLinkDevices.ref` in SES 4.42a with the version found in J-Link 6.50, removes any flashing issues. Note: Other J-Link version may also work, I have only checked with 6.50 so far. 
 
 Regarding the breakpoint placement in SES and symbol loading for debug experience, then we have discovered this is due to wrong order of elf files in SES debug options. 
 The elf-files MUST be listed with the lowest address elf first, i.e. the elf starting at address 0x0. 
 In the asset_tracker app, this will be the correct order: 
 
 mcuboot/zephyr/zephyr.elf 
 spm/zephyr/zephyr.elf 
 zephyr/zephyr.elf 
 
 To change order, Right click on Project 'zephyr/merged.hex' -> Options 
 Click Debug -> Debugger , and the re-order the elf files listed. 
 
 Correct order.

not able to debug nRF9160 DK getting error "Failed to download application Generic error"

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