I'm on Chrome 147 too and disabled:

"optimization-guide-on-device-model"

- Enables optimization guide on device

"prompt-api-for-gemini-nano"

- Prompt API for Gemini Nano

- Prompt API for Gemini Nano with Multimodal Input

and deleted weights.bin and the 2025.x folder in "OptGuideOnDeviceModel"

Will report if Chrome 148 downloads the model again.

phs318u 2 hours ago | parent | next [-]

If you touch those files into existence and chown to root and chmod to 0, it shouldn’t be able to ever overwrite them right?

	▲	pmontra an hour ago \| parent \| next [-]
		I'm on my phone now so I can't check if something has changed, but what you want to protect from change is the directory, not the files. A file can be deleted and created again if the process can write the directory.
	▲	RaiausderDose 2 hours ago \| parent \| prev [-]
		yeah, should work. Will try readonly on windows too. Now I can't see it anymore, but shouldn't the model be under chrome://on-device-internals/ -> model-status? Maybe you can uninstall there too.

Markoff an hour ago | parent | prev [-]

thanks, went to flags in Vivaldi and just in case disabled all flags containing "gemini" and first five results for "model"