Thanks a lot of Pinkus TheSteeve an Paobz, i have a lot of work, to try all.
Here the link for the firmwares
https://cal.equipment/doc/HP_Agilent_Keysight/DSOX/That woooooork guys tank you a lot of👍👍👍👍👍👍👍👍
Im very haaaaaaappy.
Here the procedure:
You must have 2 usb stick because the scope boot in the usb stick.
TheSteeve method in first, that permit to boot the scope with the first usb stick, in my case, 2. 20.202110802 version.
That read the usb stick, that say "Finishing update" with 2012" , the scope boot, you have the screen of the scope with this msg"system concerns detected:OSversion is not correct. Please reload system firmware.
In this state the scope read his OS, in the usb stick.
If you remove the usb stick, the scope hang.
You introduce the second usb stick with original firmware, in my case 2.35 version, go to "utility" , select the. cab, install it, that done!
Thanks thanks thanks 👏👏👏👏👏👏👏👏👏