When an Android Studio update is posted and you mistakenly click on Ignore This Update how do you apply the update without having to reinstall Android Studio?>
Updating hoss' answer:
I have been using Android studio 1.4 on Mac OSX and happened to ignore update 1.5. The ignored build numbers are located in "updates.xml" at the following path.
/Users/YOUR_USER_NAME/Library/Preferences/AndroidStudio1.4/options/updates.xml
Remove the "ignoredBuildNumbers" section from the updates.xml file and save it. Make sure you are updating the file in Android studio folder corresponding to version you are using. Another thing to note is, make sure you quit Android studio before updating the file. Else Studio will overwrite the xml file with previous data from memory. Edit the file and start Android studio again.
Quit studio > Edit "updates.xml"> Start studio
In case, that doesn't still work, switch to Canary channel and check for update. If there is an update, choose "Remind me later" option. Then switch back to STABLE channel and again check for update. It should be working now.