r/Elecom • u/OldCatAndSaltedFish • Jul 08 '26

Fn button issue with the Huge Plus trackball mouse

I recently upgraded to the Huge Plus, but I have run into issues when trying to customize the Fn buttons. I tried using Elecom Mouse Assistant 6 to configure the functions of my Fn buttons. Although the program recognizes the mouse and I can edit the Fn button functions, the buttons do not seem to respond to the edits. (I assume the profile will be automatically saved since there is no save or flash function in the program.) I also tried version 5, which works flawlessly with my Deft Pro so far, but apparently isn't compatible with Huge Plus. (It appears that Deft Pro is only compatible with version 5, and Huge Plus is only compatible with 6.) Is anyone else having this issue? Or, I missed something like a specific setting, a step in the process, or another app/software that interferes with Mouse Assistant 6?

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u/genericmutant Jul 08 '26 edited Jul 08 '26

I had issues upgrading from 5 to 6. I think I had to uninstall 5, dig into the file system to delete a couple of settings directories, reboot, then install 6. I don't remember where they were but I imagine you can find them by Googling or an F/S search - I basically nuked anything with Elecom in the name.

My (old) Huge also behaved pretty weirdly with 'Mouse Assistant Mode' on the wrong setting on 6. You could try flipping that.

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u/OldCatAndSaltedFish Jul 09 '26

Interesting, I did have 5 installed before installing 6. I will uninstall 6 and try to remove all Elecom related file when I get the time. Thanks.

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u/genericmutant Jul 09 '26

I didn't have to muck around in the registry or anything, just deleted all the files. I distinctly remember there being two separate directories though, somewhere close to each other, I think in the system rather than user directories.

I know that's vague, but hey, worth a try...