This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

The update to 4.0.1 isn't working.

Nugget
Nugget
more options

When I go to download a theme, I get the message "Not available for Firefox 3.5.5" The thing is, I already upgraded to 4.0.1

When I go to FireFox > Help > About Firefox, it says my version is 4.0.1. I hit check for updates just in case, but don't get anything.

When I go to download a theme, I get the message "Not available for Firefox 3.5.5" The thing is, I already upgraded to 4.0.1 When I go to FireFox > Help > About Firefox, it says my version is 4.0.1. I hit check for updates just in case, but don't get anything.

All Replies (1)

jscher2000 - Support Volunteer
jscher2000 - Support Volunteer
  • Top 25 Contributor
more options

This site thinks you are using 3.5.5, so something is definitely a little bit off.

It is possible to override the true version number with a hidden preference. To clear that:

(1) Type or paste about:config in the address bar and press Enter. Click the button promising to be careful.

(2) In the filter box, type usera and pause for Firefox to filter the list.

(3) Right-click and reset any bolded lines that seem to have wrong version information.

Also, this article lists some additional steps you might need:

Websites or add-ons incorrectly report incompatible browser | Troubleshooting | Firefox Help