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Tesla HW3-to-HW4 self-swap draws attention despite company warnings

A private modification showing a Tesla HW3 self-driving computer swapped for the newer HW4 has fueled interest in whether Tesla will pursue official upgrades for existing vehicles. Polish Model 3 owner Michal Gapinski said the work required only light ECU hacking and basic hardware fixing, though full functionality has not been achieved. Tesla has said HW3-to-HW4 upgrades are complex and costly, raising questions over responsibility, pricing and disputes over FSD promises.