Advanced users sometimes flash "OpenWRT" or "custom unlocked firmware" on the E5573CS-323 to:

: You can also toggle Auto-update on within these settings to allow the router to install updates automatically during idle times (usually between 3:00 AM and 5:00 AM). Crucial Tips for a Successful Update Update Your Phone System Online | HUAWEI Support Global

Random blogspot links and torrents. Many contain malware disguised as UPDATE.APP .

The most direct way to check for and install updates is through a web browser:

: It is generally considered a "workhorse" device, though it lacks the advanced 5GHz Wi-Fi band found in newer models, sticking to the standard frequency. Routine Solutions Limited. Troubleshooting Tips Update Fails