Cradlepoint CBA750 3G/4G Mobile Broadband Adapter

  1. Download the firmware file below to your desktop.

  2. If necessary, rename the firmware update file to "u_cba750.bin".

  3. Copy the file to a USB thumb drive; do not place it into a folder but save it directly in the root. The thumb drive needs to be FAT or FAT32 formatted.

  4. Power on the CBA750 and wait for the POWER light to turn green.

  5. Plug in the USB thumb drive into the USB port on the CBA750.

  6. The Failover LED light will come on and go solid, and the High Speed LED will blink while reading the file off the USB thumb drive. When the High Speed LED light goes solid for 3 seconds or more, remove the USB thumb drive.

  7. The router will read the file, error check it and load it.

  8. The router will reboot itself once complete.

  9. Download the modem file below to your desktop (recommended for easy file location).

10. If necessary, rename the modem file to "u_modem.bin".

11. Remove the "u_cba750.bin" file from your USB thumb drive, then copy the "u_modem.bin" file to the USB thumb drive; do not place it into a folder but save it directly in the root.

12. Power on the CBA750 and wait for the POWER lights to turn green.

13. Plug in the USB thumb drive into the USB port on the CBA750.

14. The Failover LED light will come on and go solid, and the High Speed LED will blink while reading the file off the USB thumb drive. When the High Speed LED light goes solid for 3 seconds or more, remove the USB thumb drive.

15. The router will read the file, error check it and load it. The router will reboot itself once complete.

Technical Specifications
Dated: 06/20/2011
Software Version: 1.8.2
USB Mobile Broadband Devices Supported: see the Device Integration Matrix

Download the firmware file (1.25 MB)

Download the modem file (638 KB)