Unable to ‘pub upgrade’ Flutter Tool – Retry in Five Seconds

This can happen due to a corrupted Flutter installation, network issues, or dependency conflicts. Try these steps to fix it:

1. Check Your Internet Connection

Make sure you have a stable internet connection and try again.

2. Clear Flutter Cache and Retry

Run the following commands to clear the cache and update Flutter:

flutter clean
flutter pub cache repair

Then, try upgrading again:

flutter upgrade

3. Switch to a Different Flutter Channel

Sometimes, the current Flutter channel might be broken. Try switching to another channel and switching back:

flutter channel stable
flutter upgrade

If you’re already on stable, try beta and then return to stable:

flutter channel beta
flutter upgrade
flutter channel stable
flutter upgrade

4. Manually Reinstall Flutter

If the above steps don’t work, manually reinstall Flutter:

Windows:

• Delete C:\src\flutter (or wherever you installed it).
• Download Flutter again from the official site.
• Extract and set up the PATH variable.

Mac/Linux:

rm -rf ~/flutter
git clone https://github.com/flutter/flutter.git -b stable
export PATH="$HOME/flutter/bin:$PATH"
flutter doctor

5. Run Flutter Doctor

After reinstalling, check if everything is set up correctly:

flutter doctor -v

Also Read:

Flutter Theming