In most situations, even that is giving too much power to the manufacturer. It’s fair for them to flash the original software as part of any diagnostic or service process, but not fair to refuse to repair or replace a product that actually has a hardware defect just because the owner put different software on it.
Backups are, first and foremost, your responsibility. It’s unfortunately not realistic to expect someone to diagnose whether an issue is software-related or a hardware failure on any obscure DIY OS you might have installed. But as long as it’s possible to flash back the original firmware, warranty should still apply
Locked bootloader for warranty coverage: totally fine
Refusal for owner to unlock and void warranty: not fine.
In most situations, even that is giving too much power to the manufacturer. It’s fair for them to flash the original software as part of any diagnostic or service process, but not fair to refuse to repair or replace a product that actually has a hardware defect just because the owner put different software on it.
only fair if it does not come with any data loss. so basically not actually fair
Backups are, first and foremost, your responsibility. It’s unfortunately not realistic to expect someone to diagnose whether an issue is software-related or a hardware failure on any obscure DIY OS you might have installed. But as long as it’s possible to flash back the original firmware, warranty should still apply
and because of that, that’s the responsibility of the device owner.
I’m looking forward to your advice on how to backup a device with encrypted storage, that rolls a new key when you factory reset it.