Firmware 1.23 camera stucked, big issue with EVF and shutdown.

[Théotim]

Hi all !

After updating via app (1.23) my brand new x-t4 (work like a charm with 1.22 firmware) the EVF doesn't work at all now and if i try to switch to the EVF view every thing goes black and the camera get stuck like that forever... Even if i try to reboot it, the only option is to plug out/plug in the battery. Impossible to go back to the previous firmware (what a shame on a 2000€ camera). I'm very frustrated my camera is unusable... I update again the firmware with the classic SD option, the process finish the update without a problem but the problem persist cannot do anything with it now. If the camera go sleep... Stucked. If the eye sensor is activated for the EVF... Stucked. If i try to shutdown the camera... Stucked. 

Thank you in advance.

Best regard.

[Choccy]

I've not touched the last two updates at all