For the actual BetaV4, you need to reflash your sim, but we are working on having a new OS working with the v4 and the previous as well, like the Dual Ferrari+Japhar etc. This is only Japhar V4 and will not work with the older Japhar images as well as not Ferrari images. This is why we called it BetaV4 (compared with v3-v2-v1 before). So a V5 (that we hope soon to release) should be capable of running all old images and new generation of images.

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