The only good way to test the sim, to be sure it's OS v6, is to flash the OpenVision v6 image and see if it works (You can also flash a v5 image and if you have NO CA ERROR then you know the sim is OS v6).

Patching is not always possible, depending of the image. If the image is available in v6 version, better is just to flash the v6 new image and then restore the settings on it.

All Sim sent since April 2019, are flashed with the v6 already.

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