If you find yourself still without the Android 2.3.7 (GWK74) update for your Sprint Nexus S 4G, have no fear - we're here to help. Thanks to Omar over on Google+, we've got a direct link to the update.zip from Google themselves. To flash the update:
- DOWNLOAD: Android 2.3.7 (GWK74) For Sprint Nexus S 4G (Mirror)
- Rename the file to "update.zip" (please make sure you have file extensions set to show)
- Place it on the root of your SD card (not in a folder)
- Reboot into recovery
- Select "Apply update.zip"
When you reboot, launch Google Wallet - it may crash on your first run, so just run it again if this happens. As a note, If you're on a handset with a custom (or DeOdexed) ROM and want to update using this file, you'll need to flash back to stock GRJ90 to flash this update
If you are running a custom ROM and want to flash to the stock GWK74 update, check out this thread over at XDA. There are links for both de-odexed and odexed versions.