TWRP instructions:
Latest available factory image is given here:
https://support.fairphone.com/hc/en-us/articles/360048050332-FP3-Install-Fairphone-OS-offline
TWRP instructions:
Latest available factory image is given here:
https://support.fairphone.com/hc/en-us/articles/360048050332-FP3-Install-Fairphone-OS-offline