To update your Tally to the latest version, you must have a valid Tally Software Services (TSS) subscription.
1. Go to Gateway of Tally > F12: Configure > Product and Features. The product and features screen will appear as shown below:
2. Click F12: Configure.
3. Set Show all releases? to yes. This will ensure that all the available releases are listed.
4. Select the latest release.
5. Click F6: Update as shown below:
6. Tally ERP 9 will need to restart in administrator mode to update the product.
Tally ERP 9 will automatically restart in administrator mode if you click yes in the screen below.
Your Tally ERP 9 will now be updated with the latest release and restart.