How to switch the language on LAUNCH X431 PRO ELITE?

Question:

I have a LAUNCH X431 PRO ELITE, purchased through regular channels, and just activated. The seller said that it can switch to 25 languages, but I can't switch? Any suggestions?

X431shop.eu replied:
Some smart tablet devices of LAUNCH X431 need to switch the "Language" option in the system settings to Russian/French/German and other languages, and then download and upgrade the software.