====== Recovery Update ======

In some rare situation there is the need to make a recovery update.  This update procedure will lead to a complete fresh filesystem of the product afterwards. 

===== Request Recovery Images =====


Please contact us [[https://www.netmodule.com/en/support|via the support form]] to get access to the Recovery Images

====== Preconditions ======
  * You will need to have tftp server running on the ** IP 192.168.1.254 Subnet: 255.255.255.0** on a PC or other Network Device
  * Connect the netModule Router with the tftp Server via Ethernet on the **Ethernet 1** Connector
  * In case you don't have a tftp server running you can use the Windows Tool [[http://tftpd32.jounin.net/ |TFTPd32]]. For Linux please consider a tftp-server like tftpd-hpa
  * Please download and copy the recovery files: **recovery-image** and **recovery-dtb** to the root directory of your tftp server.  Please download the files according to the product your are using. 

For NB1601 Products: 
  * For NB1601 HW Rev. A Please use the Folder NB1601.
  * For NB1601 HW Reb B01 Please use the Folder NB1601B.

[[https://www.netmodule.com/uploads/files/produkte/PCN/PCN_NB1601_20201215.pdf|See the PCN for details which HW Rev. you are using]]

For NB800 Product: Please choose the right folder according to your Productvariant
  

====== Execution ======

  - Power off you device
  - Place a tiny pin in to the reset hole and press the reset button
  - Power on the device and keep the reset button pressed
  - Keep the reset button pressed for **aprrox. 40 sec.** until all LEDs flashed up in the **color RED** (excluded are NB800 modules they will flash green)
  - Release the reset button now
  - The download of the files recovery-image and recovery-dtb should be visible with the tftp server log
  - The recovery image will be booted now. 


====== Update Process ======

Please visit the IP http://192.168.1.1 with your webbrowser. 

There will be the system recovery update screen:

{{ :troubleshooting:screenshot_-_271015_-_15_15_32.png?nolink&300 |}}

Choose the normal software Image with the Browser Button and press the upload button to start the recovery update process. The latest software image can be found on our [[https://share.netmodule.com/public/system-software/latest/|FTP]] or on the [[documentation:start|Documentation and Downloads]] page


====== Final Steps ======

  - Power off you device
  - Place a tiny pin in to the reset hole and press the reset button
  - Power on the device and keep the reset button pressed
  - Keep the reset button pressed for **aprrox. 10 sec.** until all LEDs flashed up in the **color GREEN**
  - The Device will be in the factory state now

====== Boot Process ======
The status LED gives indication about the start of the router. 
When the router starts, the following steps are executed sequentially

1. Power off
	All LEDs off
2. Powered on
	Status LED solid orange
3. U-Boot loaded
	Status LED green solid (typical 1-2 secs)
4. Kernel loaded and started
	Status LED off (typical 1 sec)
5. Starting applications (init)
	Status LED green blinking
6. Start completed & applications running
	Status LED solid green, other LEDs become active

===== Troubleshooting =====

1. Status LED solid orange for a long time 
	Please contact support
2. Status LED solid green without prior blinking
	Potential flash problem (CRC) -> make recovery update