HST screen upside down after upgrade

Knowledge Base - Solution

I just updated my Viavi HST and now the screen is upside down.
Power the HST off and plug in the AC charger. Hold down the SYSTEM button and then turn the power on. When you see a prompt asking you to pick a language let go of the SYSTEM button and press number 1 for English. Press number 7 on the keypad for Rotate LCD. The screen will now be oriented correctly and you can power the unit off and then power on as normal.