Downgrade from CalyxOS Android 14 to FPOS

Hi all, how can I correctly downgrade from CalyxOS Android 14 to FPOS that is Android 13?

I have currently the bootloader relocked.
I reqd somewhere that In order to downgrade I could via fastboot and of course after unlocking bootloader but only flash with a OS that has same or newer security patch.

Someone can help?
thanks

It is at the moment. But I think A14 will likely be coming soon to the FP5 so if that’s your only motive then I wouldn’t bother. Likely a lot of trouble for little gain.

The security patch will be another dissuasive factor.

thanks for answering but I was looking for someone who has the same necessity or might have it in near future and can share the experience or the correct procedure in this case

CalyxOS matches the rollback index from stock, at least on the Motos and I would assume as well on the Fairphones, so it should be fine.
It might make sense to ask in their Matrix channel just to be sure. The return to stock page isn’t yet set up for devices other than Pixels unfortunately, due to it being a bit complicated.

I don’t think it’d be safe to downgrade to an older version of FPOS though. Only either the most recent or with an unlocked bootloader.

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