can't choose hex or bin file for OTA about android-nrf-toolbox

[philips77]

If you are using native file chooser click the menu in top-right corner and enable Show internal storage. Then open the left menu and select your phone's name to get into local directories.
If it's not your case, please use a different app, check if your files are there, etc.
What you described is not an issue of this app so I'm closing it.

[zassen]

what you described is not my case. I check the file is available. just can't show in app. I recompile the apk after midify the mime type to application/hex. the hex can show in my app. my file manager app is native app on xiaomi 6

[philips77]

Well... In my opinion application/hex is (unfortunately) not a valid mime type. There is no defined one, so we rather use application/octet-stream, which works on other file browsers. Unfortunately I can't predict what app are you using, and I can't set more than one data type...
I'd rather say that the native for browser on xiaomi should show hex when this type is requested to be compliant with other browsers.

[zassen]

maybe can try "application/*" for mime type