Hello again.
So I did that and the firmware was indeed version 1.1.
I used UHD drive tool to try and downgrade to 1.0 firmware but I had a big problem.
IDE mode was OK, I launched the software.
First step was ok, firmware was erased but when the second step, the installation of 1.0 firmware, started, UHD drive tool made my PC crash with a blue screen and rebooted.
As a result, my drive is now without firmware and is not recognised either by windows or even my bios.
What can I do now? Apart from trashing the drive?
Thanx