⚠
warning Netgear
Error Code Blinking amber
The firmware is upgrading, or the Reset button was pressed.
? What Causes This
Firmware update in progress or reset operation initiated.
✓ How to Fix It
Wait for the firmware upgrade to complete. Do not power off the router during this process.
Source: page 11 of the official manual
From the manual
This error code appears in:
Netgear Nighthawk Router