https://devzone.nordicsemi.com/f/nordic-q-a/37860/debugging-dfu-in-iar---sdk15-0-0I am trying to debug the DFU in IAR. However, when flashing as is I get the following error: Sat Aug 25, 2018 20:31:45: ELF/DWARF Error: Unsupported .debug_info format version: 4. Do you know of any solutions? Thanks.en-USTelligent Community 13Mon, 27 Aug 2018 15:28:16 GMThttps://devzone.nordicsemi.com/thread/145983?ContentTypeID=1Mon, 27 Aug 2018 15:28:16 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2393cc0a-c13a-4550-915a-bd88d10a2a8cSigurd<p>Hi,</p> <p>1) Open the makefile in the folder: SDK_folder\external\micro-ecc\nrf52hf_iar\armgcc\<br />2) Replace the -g2 flag from optimization and assembler, and use&nbsp;-gdwarf-3 instead.&nbsp;<span>See picture:</span></p> <p><img alt=" " src="https://devzone.nordicsemi.com/resized-image/__size/320x240/__key/communityserver-discussions-components-files/4/pastedimage1535383670448v2.png" /></p> <p>3) In the same folder, delete the&nbsp;<em>_build</em>&nbsp;folder and the micro_ecc_lib_nrf52.a file<br />4) Go to the folder: SDK_folder\external\micro-ecc\, and run build_all.bat again</p> <p>Note: The above changes in the makefile are added in SDK 15.1</p><div style="clear:both;"></div>