The installation requires the entire physical host to be rebooted
PREREQUISITES
■ IPMI: ensure you have access to the IPMI interface for remote management;
■ ISO: download the correct ISO file based on the versions of SynetoOS you want to install
→ SynetoOS 6.0.2.7376 GA + VMware ESXi 8.0U3i
→ SynetoOS 6.0.2.7376 GA + VMware ESXi 7.0U3w
→ SynetoOS 6.0.1.7080 GA + VMware ESXi 8.0U3g
→ SynetoOS 6.0.1.7080 GA + VMware ESXi 7.0U3w
→ SynetoOS 5.4.1.5266 + VMware ESXi 8.0U3d
→ SynetoOS 5.4.1.5266 + VMware ESXi 7.0U3s
→ SynetoOS 4.8.6.4777 + VMware ESXi 7.0U3p
IMPORTANT
Ensure the Boot Mode is configured to either Legacy or Dual before proceeding
Step 1. Set the IPMI session timeout to 0 ("How to Set the IPMI Session Timeout to 0")
Step 2. Shut down all VMs and VMware ESXi system
Step 3. Erase partitions and data from disks ("How to Erase Disks Before Installing ESXi on Bare Metal Servers with GParted")
Step 4. Run the ISO from IPMI ("How to Mount an ISO via IPMI")
Step 5. Select the newly mounted ISO via IPMI and boot it up
Step 6. Wait for VMware ESXi installation to finish (about 1 hour)

Once the process is complete, enter the BIOS settings again and switch the Boot Mode back to UEFI.
IMPORTANT
Troubleshooting Installation error ("How to Solve "Installation Error" in VMware ESXi")
Step 7. Login to VMware ESXi GUI (replace <your_ip_address_or_hostname> with the correct ip/hostname)
https://<your_ip_address_or_hostname>