@stefano I made the change sda42-43.
But when I wanted to install the 16.04 with ubsports-installer 0.1.20, it still put me the error "boot.img".
Whereas with the version 0.1.12, the installation 16.04 did well.
Hoping that the OTA 5 will be fine.

thank you for your explanations

@stefano Thank you very much. I will try again. But you think OTAs in the future will be bigger and bigger. Or it's only for the passage in 16.04

@Stefano : Hello. I try to put my Pro 5 15.04 in 16.04 (formerly Android) but I can't.
I tried with your method to increase the cache but I have too much error message.
I wonder if you received an echo with the use of gparted. if it works or not.

And second query, if I turn everything except TWRP, will it work with "ubports-installer" or I would still have to increase the cache?

thank you in advance

Hello i just want one precision. My E5 has receved the OTA 2 (very good job), but i don't see the new grid.
is it normal ? This changement will make in the OTA 3 ?