Hi Brice,
This sounds a lot like the issue some of us have been having with Resin OS 2.14.3, does that match your OS?
I get a mix of “Error processing tar file(exit status 1):” and “Error processing tar file(exit status 1): write [filename] cannot allocate memory”.
Our images are around 800MB and still download correctly on older Resin OS releases.
We have this issue on QEMU x86 64bit and another user is experiencing it on Raspberry Pi 3.
Resin’s Fleet Operations are looking into it and said they will reply on our thread.
One of our 2.14.3 devices was left looping but completed its download after 5 hours. Another looped for 7 hours and did not complete. We are downloading a classic app, so this may span both app types and multiple boards.