Hello,
meanwhile I managed to get my kobo working

) I am so glad.
Finally, I kept the old micro card and I try to press light bottom and power bottom until getting light flashing very quickly. After many trials I get restoring screen and then factory reset screen. I turn on kobo and follow steps on the screen and then connect it to my laptop, it is now detected and I upgrade it using desktop.
But the screen is damaged.
I found
https://fr.aliexpress.com/ which sells kobo screens but I not sure it is reliable
Would any one have an idea about this seller?
Thanks