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Trained repair professionals at hospitals are regularly unable to fix medical devices because of manufacturer lockout codes or the inability to obtain repair parts. During the early days of the COVID-19 pandemic, broken ventilators sat unrepaired for weeks or months as manufacturers were overwhelmed with repair requests and independent repair professionals were locked out of them. At the time, I reported that independent repair techs had resorted to creating DIY dongles loaded with jailbroken Ukrainian firmware to fix ventilators without manufacturer permission. Medical device manufacturers also threatened iFixit because it posted ventilator repair manuals on its website. I have also written about people with sleep apnea who have hacked their CPAP machines to improve their basic functionality and to repair them.
PS: he got it repaired.
It also allows end users to install parts superior to OEM, improving braking capabilities, and preventing accidents.
Any automotive technician can tell you that manufacturers take engineering shortcuts, resulting in a product with certain deficiencies. The manufacturer’s motivation is to put out a product that widely appeals to the general public. They want nothing to do with a product specifically tailored to the needs of a particular individual.