> For the complete documentation index, see [llms.txt](https://indoor.router.works/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://indoor.router.works/manual/advanced/bootloader.md).

# Bootloader

The router enters a reboot cycle when the firmware is incomplete or corrupted. While this occurs, the WiFi and LAN connections cannot be maintained.

This typically occurs due to deleting critical files or disconnecting the power supply while resetting or flashing the firmware. The 5G router features a built-in uBoot bootloader to restore the firmware system. 

Please follow the steps below to rescue the router from "Brick" mode and rebuild the firmware system.

### LAN and Static IP

Connect a computer to the LAN port on the router. Then, configure the static IP address on the computer as shown below. 

<mark style="color:orange;">Computer IP: 192.168.1.150 (Pool 2–249)</mark>\ <mark style="color:orange;">Router IP: 192.168.1.1</mark> \ <mark style="color:orange;">Subnet mask: 255.255.255.0 (also called 24 on Windows OS)</mark>

<figure><img src="/files/ffknBlUq487BoZu1BVhN" alt=""><figcaption><p>Example of Static IP and Uboot Interface</p></figcaption></figure>

### Enter uBoot Mode

i. Disconnect the router from the power supply. \
ii. Press and **hold** the "Reset" button on the router, then connect to the power supply. \
iii. Keep holding the reset button for 5 seconds. The connected LAN port indicator will turn on, and then release the reset button.&#x20;

Now, we can access the uBoot interface on a web browser by visiting <http://192.168.1.1/.&#x20>;

***Note:** If the uBoot interface is not showing, please change it to another web browser or try to clean the cache and cookies on the web browser.*

### System Rebuild

1. Once you access the "Firmware Update" page shown above, click the "Upload" or "Choose File" button to upload the previously saved firmware file to the router.
2. Click the "Upload" or "Update firmware" button to flash the uploaded firmware file.
3. Wait 2–3 minutes until the uBoot flashes the new firmware, and the router will reboot automatically.
4. Change the computer network's IP to a DHCP client or use the static IP range below. Then, we can access the router's admin page at <http://192.168.20.1/.\\> <mark style="color:blue;">Computer IP: 192.168.20.150 (Between 100\~249)</mark> \ <mark style="color:blue;">Router IP: 192.168.20.1 / Subnet mask: 255.255.255.0</mark>

***Note:** Please contact us for the download link to the latest firmware file. The correct firmware file should end with **\*.bin**. Do not unzip or modify its contents.*


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