C34SX4 older firmware download

Hello, I have troubles finding older firware and WB UI versions.
Can anybody send me the correct link to download earlier firmware?
Thanks!

Where can I download firmware and UI firmware?

Firmware Version          48.63.204.104
  Web UI Version          CH203.3.1.21
  Alias          IPCAM3
  Camera ID          VSTF298319TGDEC

Dear Sir/Madam,
Do appreation for your promptly feedback, I have send you the firmware files,please check,
No UI Firmware for you, because it is no need to upgrade UI firmware.