FP3 - Version 1.5-202210312300909

  • Easy-installer is not apropriate in your case, as it will erase all data on your device.
  • as said in post 3, download the latest version,

dev e-2.4-t-20240925436899-community-FP3.zip
or
stable e-2.4-t-20240924436695-official-FP3.zip

look at the photos for differences, BUT

  • as @AnotherElk said, using TWRP is complicate on this device, so choose the recovery-e procedure
  • as @urs_lesse said, there is no device storage method possible on your device, go direct from step (1) “install adb”, to step (8) “using the recovery-e
  • so from your computer type :
adb sideload e-2.4-t-20240924436695-official-FP3.zip
  • as explained in step (8) :
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