UPDATE: this wifi bug has meanwhile been solved. In v3.60~59 or thereabouts.
ps. for Cerbo MK2s where the wifi no longer works, these are the steps to make it work again:
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update it to v3.60~53 or later. Using and sdcard, usb stick or by connecting an ethernet cable.
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power cycle it to make it work again. Just resetting/restarting is not enough.