I can't upgrade beyond 1.31

[hurstbergn]

Hey so I can't upgrade beyond version 1.31 (I didn't use steam to download it, I downloaded it from the main site) Does anybody know how i can upgrade it to 1.81 or whatever? Thanks, hurstbergn 

[sumghai]

Could you please verify which of the following situations apply to you?

• You cannot find the download link for 1.8.1 on the main KSP website
• You cannot log into your KSP website account
• You've downloaded the installer, but cannot run the executable file
• You've run the executable file, but your KSP installation crashes on startup
• You've run the executable file, but your KSP installation still shows the older 1.3.1 version

[Harry Rhodan]

• You're trying to update using the launcher which has been abandoned about five years ago