HostX WHMCS Web Hosting Theme :
Step 1: Log in FTP or Cpanel
Step 2: Go to /templates/hostx/banners/
Step 3. Upload the desired banner image
Step 4: Log in to WHMCS Admin
Step 5: Go to Add-ons > WGS HostX >Page manager
Step 6. Select the page you want to change the banner image for and add the newly uploaded banner image to the page.