Cell2Jack

  • Home
  • Setup
  • buy
  • FAQ
  • Contacts/support
  • Features
  • Tips
  • User Review
  • Privacy Policy
  • Bluetooth pairing
  • make call
  • assistant
  • 5V
  • Audio is bad. How to fix it?
  • CallerID
  • Share Cell2Jack with two cell phones
  • No dial tone
  • Second
  • ​How to use cellphone answer call while it is paired to Cell2Jack
  • no-ring-fix
  • VOIP app compatibility
  • Factory Reset
  • answer
  • FCC,CE,RoHs certifiation
  • video
  • dialing issue
  • wall_phone_socket
  • flip
  • RotaryPhone
  • update4_mac
  • setting
  • update4
  • return
  • senior
  • Return & Refund Policy
  • Contact US
  • commands
  • How to repair Cell2Jack to a new cellphone
  • Audio
  • echo
  • google store
  • manual
  • ringing issue
  • instock
  • The billing Terms & Condition
  • Utility
  • DTMF
  • Buyshopify
  • BuyNew
  • USB
  • Call drop
  • landline number porting
  • power
  • Home
  • Setup
  • buy
  • FAQ
  • Contacts/support
  • Features
  • Tips
  • User Review
  • Privacy Policy
  • Bluetooth pairing
  • make call
  • assistant
  • 5V
  • Audio is bad. How to fix it?
  • CallerID
  • Share Cell2Jack with two cell phones
  • No dial tone
  • Second
  • ​How to use cellphone answer call while it is paired to Cell2Jack
  • no-ring-fix
  • VOIP app compatibility
  • Factory Reset
  • answer
  • FCC,CE,RoHs certifiation
  • video
  • dialing issue
  • wall_phone_socket
  • flip
  • RotaryPhone
  • update4_mac
  • setting
  • update4
  • return
  • senior
  • Return & Refund Policy
  • Contact US
  • commands
  • How to repair Cell2Jack to a new cellphone
  • Audio
  • echo
  • google store
  • manual
  • ringing issue
  • instock
  • The billing Terms & Condition
  • Utility
  • DTMF
  • Buyshopify
  • BuyNew
  • USB
  • Call drop
  • landline number porting
  • power

Hardware Version

On the back of Cell2Jack box (see below picture). It should have the ver number.
Firmware update for ver.4.0 or higher, click here
Firmware update for below ver 4.0, click here
Picture
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