Update Software — In Huawei E5573cs-323

Updating firmware is a sensitive process. If the device loses power midway through an update, the router can become "bricked" (permanently damaged). Follow these precautions strictly:

The HUAWEI E5573CS-323 is a popular 4G/LTE portable hotspot. Keeping its firmware (internal software) up to date is essential for improving performance, fixing bugs, patching security vulnerabilities, and ensuring compatibility with your mobile carrier’s network. Update Software in HUAWEI E5573CS-323

There are two main ways to update the device: over the air (Online Update) or manually via a computer (Local Update). Updating firmware is a sensitive process

Most people searching for “update E5573CS-323” actually want to: The HUAWEI E5573CS-323 is a popular 4G/LTE portable hotspot

These require flashing custom or generic firmware (e.g., from E5573s-320, E5573s-856, or Balong tools).

When OTA fails, the manual method is the most reliable. You will need a Windows PC and a micro-USB cable.