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Maybe they should have to open iOS signing to all versions a device ever received when it becomes EOL? That also has implications with regards to preservation -

by LocalH 5y ago

Maybe they should have to open iOS signing to all versions a device ever received when it becomes EOL? That also has implications with regards to preservation - if you can never install a given version of the OS again, then how can you trust it is properly preserved?

judge2020 5y ago
You can always install the old version, Apple just doesn't think they can optimize new iOS versions to make old phones work well with the new software (and the bloat/feature creep within).
- EvanAnderson 5y ago
  Without circumventing protections you cannot install old versions of iOS. Many phone models have flaws in the protections that allow you to circumvent the protections, but officially installing old iOS versions ends when Apple decides.
- LocalH 5y ago
  No you can't, and you haven't been able to in some time. Apple devices that need restoring post-EOL are generally restricted to the last-released version. I think you have to go back to the original couple of iPhone models to be able to ignore SHSH and APTicket. There are ways around this with some models, but it's been a long time since it was even "save SHSH blobs and replay them" easy.