https://devzone.nordicsemi.com/f/nordic-q-a/42493/i-can-t-upgrade-nrfjprogHI nordic i installed command line tools in https://www.nordicsemi.com/Software-and-Tools/Development-Tools/nRF5-Command-Line-Tools and i got this exe file nRF5x-Command-Line-Tools_9_8_1_Installer.exe after i installed this exe file i checkeden-USTelligent Community 13Tue, 15 Jan 2019 01:02:52 GMThttps://devzone.nordicsemi.com/thread/165611?ContentTypeID=1Tue, 15 Jan 2019 01:02:52 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7a991d4a-0ea1-4c87-b078-b2b2526e64c0james cho<p>thank you </p> <p>i have old version path in PATH environment variable</p> <p>after delete it it works!!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/165416?ContentTypeID=1Mon, 14 Jan 2019 12:05:53 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4c8a454f-1c77-4e21-bed4-cc3077f5f032Stian R&#248;ed Hafskjold<p>Probably the old installation is still existing somewhere and PATH environment variable contains both paths. Try to uninstall the old version, or just delete the folder.</p><div style="clear:both;"></div>