You can download VMware ESXi 7.0.3 ISO directly from the following link:
md5sum ESXi-7.0.3-21973113-standard.iso
If you're upgrading from a previous ESXi version, ensure you follow the recommended upgrade path and take a backup of your existing configuration. vmware esxi 7.0.3 iso download
To install ESXi 7.0.3, create a bootable USB drive or CD/DVD from the ISO file. You can use tools like Rufus (for USB) or ImgBurn (for CD/DVD) to create the bootable media. You can download VMware ESXi 7