If you're too hardcore for web-interface, you can do it in CLI.
1. Copy Jumbo Hotfix package to the firewall into a temporary directory using SCP:
/var/log/upload/jumbo_hotfix/
2. Connect to the firewall with SSH in Clish
3. Acquire Configuration Lock over Gaia:
> lock database override
4. Import Jumbo Hotfix package:
> installer import local /var/log/upload/jumbo_hotfix/Check_Point_R77_30_JUMBO_HF_1_Bundle_T512_FULL.tgz
5. Check imported packages in Hotfixes section:
> show installer packages imported
> show installer package <Package_Number>
6. Verify that this package can be installed without conflicts:
> installer verify <Package_Number>
Info: Initiating verify of Check_Point_R77_30_JUMBO_HF_1_Bundle_T512_FULL.tgz...
Result: Installation is allowed
7. Install the imported package:
> installer install <Package_Number>