Related information about the product and version: the T3200 and T3500 G2.
After the firmware upgrade, disconnect the AC power supply. Wait three minutes and then restart the device. The black screen occurs, the power module is normal, the indicator of port 80 is in the 0x00
state, and the BIOS is not running. For details on how to check the indicator status of port 80, see 3.2 Checking the 80 Port LED of the T3200 or the T3500 G2