I have the same issue, running it as admin (sudo) makes no difference
brand new Macbook pro Catalina 10.15.6
sudo /Applications/balenaEtcher.app/Contents/MacOS/balenaEtcher
(node:25484) Electron: Loading non-context-aware native module in renderer: ‘/Applications/balenaEtcher.app/Contents/Resources/app/generated/modules/xxhash/build/Release/hash.node’. This is deprecated, see https://github.com/electron/electron/issues/18397.
(node:25484) Electron: Loading non-context-aware native module in renderer: ‘/Applications/balenaEtcher.app/Contents/Resources/app/generated/modules/ext2fs/build/Release/bindings.node’. This is deprecated, see https://github.com/electron/electron/issues/18397.
(node:25484) Electron: Loading non-context-aware native module in renderer: ‘/Applications/balenaEtcher.app/Contents/Resources/app/generated/modules/drivelist/build/Release/drivelist.node’. This is deprecated, see https://github.com/electron/electron/issues/18397.
(node:25484) Electron: Loading non-context-aware native module in renderer: ‘/Applications/balenaEtcher.app/Contents/Resources/app/generated/modules/@balena.io/usb/build/Release/usb_bindings.node’. This is deprecated, see https://github.com/electron/electron/issues/18397.
ready-to-show: 454.244ms
Checking for update
Error: Error: net::ERR_CERT_INVALID
at SimpleURLLoaderWrapper. (electron/js2c/browser_init.js:93:6395)
at SimpleURLLoaderWrapper.emit (events.js:223:5)
{“stack”:“Error: net::ERR_CERT_INVALID\n at SimpleURLLoaderWrapper. (electron/js2c/browser_init.js:93:6395)\n at SimpleURLLoaderWrapper.emit (events.js:223:5)”,“message”:“net::ERR_CERT_INVALID”}
{“stack”:“Error: net::ERR_CERT_INVALID\n at SimpleURLLoaderWrapper. (electron/js2c/browser_init.js:93:6395)\n at SimpleURLLoaderWrapper.emit (events.js:223:5)”,“message”:“net::ERR_CERT_INVALID”}