Yes, you can update your vCenter from version 8.0.1.00200 to 8.0.3 directly.
Since your environment does not allow vCenter to access the internet, you will need to manually upload the necessary ISO file to your datastore. For this update, you should download the "VMware vCenter Server Appliance Patch" (the third file listed) with the file name VMware-vCenter-Server-Appliance-8.0.3.00000-24022515-patch-FP.iso
Upload the ISO file to a datastore that your vCenter VM can access.
Edit the settings of your vCenter VM and attach the ISO file to the CD/DVD drive and connect it.
Before proceeding with the update, ensure you have a full VM backup, a file-based backup, and take a snapshot of the vCenter VM.
- Access the vCenter Server Management Interface (VAMI)
- Go to the update tab.
- Choose the cd-rom option as the update source.
- Stage and then install the update.