Tenda D302 Firmware — Update |link|

If your D302 is stuck in a boot loop or won't load the admin page, use the hidden recovery mode:

Arjun sighed, pushing his chair back. He walked over to the corner of the living room where his networking equipment lived. There sat the Tenda D302, an ADSL2+ modem router that had served him faithfully for three years. Tonight, however, the LED indicators were blinking erratically—the ADSL light was solid, but the internet light was dancing a chaotic jig. Tenda D302 Firmware Update

Interrupting a firmware update (e.g., power loss, browser closure) will permanently brick the device. If your D302 is stuck in a boot