Upgrade Procedure from WellBilling Proxy v3.0.1 and Billing 2.0.2 upgrade to Proxy v3.0.4 and Billing v2.0.4 Step 1: Unzip 6500b_P304B204.zip Procedure: http://xxx.xxx.xxx.xxx:10087 login user: xxxx login password: xxxx Upgrade the software (Control > Upgrade) -file name: billing_wwwroot.bin -file name: Billing.bin -file name: sippd.bin -file name: wwwroot.bin -file name: acd.bin -file name: dbserver.bin -file name: osadmin.bin Click "Upload" button: Display: billing_wwwroot.bin---->Successfully osadmin.bin --->Successfully sippd.bin ---->Successfully wwwroot.bin ---->Successfully Billing.bin ---->Successfully acd.bin ---->Successfully dbserver.bin ---->Successfully Step 3: Click "Control > System > "Restart" WS6500-B (After upgraded, please restart WS6500-B)