From 1.50, you'll need to do this to get the latest and greatest -

1.50 - 3.52 M33 - 3.52 M33-4 - 3.71 M33 - 3.71 M33-2 - 3.71 M33-2 with 1.50 kernel addon v2

That involves two major upgrades, and three smaller ones. It's a lot, I know, but you will understand once you're on 3.71 M33-2 with 1.50 kernel addon v2.

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