Yahoo is the default search engine for Firefox. You don't need to install this, it is built-in with browser. Consider to see this article about changing your default search engine: https://support.mozilla.org/en-US/kb/use-search-bar-firefox#w_set-a-default-search-engine

do you mean 'y' in address bar is hardcoded to yahoo search?

it wasnt so in v.39 i was using y for yandex but now in 40 its hardcode?

so fucking shame

You can check the keyword assigned to search engines in "Options/Preferences > Search".

• https://support.mozilla.org/kb/Search+bar

cor-el said

You can check the keyword assigned to search engines in "Options/Preferences > Search".

• https://support.mozilla.org/kb/Search+bar

thats exactly where i have Yandex assigned to Y and no Yahoo at all

)

Are you using 'y' with parameters appended or only a bar 'y'?

A keyword is only recognized when used with at least one parameter. Otherwise autocomplete might pop in.

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem.

• Switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance
• Do NOT click the Reset button on the Safe Mode start window

• https://support.mozilla.org/kb/Safe+Mode
• https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

what do i need to troubleshoot?

in searches i got g for Google y for Yandex

when i type 'y 123' in address bar it starts yahoo for '123' fucking mess

so any ideas or ff is just f0cked up?

its fixed somehow

i've assigned yandex to another letter, then restarted

then assigned back to 'y' and it worked :)