Hi,
i connected my Trezor after one year to check my wallet and it seems i need to do a update of firmware to start using my Trezor again. When i wanted to get my Trezor into Bootloader status (by disconnect a cable and pressing both buttons) i can only see on Trezor screen serial number info and Loader 1.5.1 but not any check to do a update of firmware. Even application in PC doesnt show an animation of disconnect a device and pres both buttons. Can you help me how to do that update? Thank you 
Please note that support for firmware from before 2020 is not guaranteed in current versions of Trezor Suite. Trezor Suite version 24.12.3, available at Release v24.12.3 · trezor/trezor-suite · GitHub can connect with many older firmware versions.
Be sure to check your wallet backup before proceeding with a firmware update. If you are using firmware older than version 1.6.3 your backup will be wiped during the update process.
Older bootloaders also require pressing both buttons rather to start than just the left button, so if your Model One is significantly out of date, the actions you need to take on the device may vary.