Quick Note 29. How to recover a router that will not boot

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1 Quick Note 29 How to recover a router that will not boot June 2015

2 Contents 1 Introduction Version All 4000-Series routers (including IR2110B modems) Cirrusboot Cirrus boot a TA2020B modem WR41 and WR41v2 IMX boot DR64xx MK 1 Centillium boot WR44 TESLA boot Errors and how to identify them WR44 Tesla BOOT... 24

.. 10 3 WR41 and WR41v2 IMX boot... 11 4 DR64xx MK 1 Centillium boot.

3 1 INTRODUCTION Sometimes a Digi Transport router fails to boot up. This often attributed to a damaged bootloader. Depending on the router model, there is recovery process which will restore the router to a working state. *NOTE: The file numbers used here are examples only. They were what we used to create this document and the ones you use for your particular router may be different. 1.1 Version Status 1.0 Draft 2.0 Updated and rebranded 2.1 Clean-up and Links update 1.2 Select a recovery method Look at the Model Type in the following table and determine the appropriate recovery method Model Type Recovery Method Section All Sarian 4000 series Cirrus Boot 2 IR2110B, TA2020B* Cirrus Boot 2, 2.1 WR41 and WR41v2 IMX Boot 3 DR64xx MK 1 Centillium Boot 4 WR44 Tesla Boot 5 2 ALL 4000-SERIES ROUTERS (INCLUDING IR2110B MODEMS) CIRRUSBOOT Page 3

They were what we used to create this document and the ones you use for your particular router may be different. 1.1 Version Status 1.0 Draft 2.0 Updated and rebranded 2.1 Clean-up and Links update 1.

4 The following devices can use Cirrus boot firmware. HR4110, ER4110, MR4110 routers and IR2110B, TA2020B* modems *NOTE The TA2020B router has NO Ethernet port so you need to set up FlashWriter to use the Serial cable only. In the following example an ER4110 that will not boot will be recovered The recovery process is as follows: Navigate to the flashwriter firmware section of the Digi website via this link Then select the firmware version for your particular model (ER4110) Normally you will choose the latest version (5129 here you can choose older versions if required) Extract the two files from the zip file ER all ER ini This is the content of the.ini file: ,n,8,1 scan, Amend the.ini file by inserting an extra line (cirrusboot,) before the scan as shown ,n,8,1 cirrusboot, scan, Next, navigate to the ftp firmware section of the Digi website via this link Extract the.rom file Page 4

In the following example an ER4110 that will not boot will be recovered The recovery process is as follows: Navigate to the flashwriter firmware section of the Digi website via this link

5 s602v21m.rom and rename its file name and extension as follows: s602v21m.rom rename it to ER sbios You now have three files which represent the Cirrusboot firmware ER all ER ini ER sbios To continue, you will need to have FlashWriter installed on your computer. You can download the latest version from here. Once installed, proceed as follows: Close any software such as HyperTerminal that may be using the serial port Power off the router Make a note of the serial number and revision from the bottom of the router. eg /4403a Connect the serial cable to the router Connect the router to the LAN port of your PC Open FlashWriter, click "Advanced > Set remote TFTP IP address" Enter an IP address from your own subnet that the router can use temporarily, click OK Set the "Communications port number" to your serial port number Ensure only "Use event driven mode" & "Use TFTP" are enabled Click Load, at the warning click Yes then OK Locate the folder that you extracted earlier and select the.all file eg: HR all Click OK on the FlashWriter window that tells you to power up the router Use a pen to hold in the reset button on the bottom of the router, whilst this is held in, power on the router FlashWriter will start loading a boot image, you can now let go of the reset button When prompted for the serial number, enter the number you noted earlier but without any leading zeros, ie becomes 12345, click OK When prompted for the hardware revision number, enter the number you noted earlier eg 4403a, click OK FlashWriter will continue and load a new image and factory default config files FlashWriter will reboot the router when done and report "Device upgraded successfully" Close FlashWriter. You need to ensure that you have selected the correct COM port for your PC to connect to the serial port of the router. My PC uses COM 1 yours may be different. Page 5

6 Make sure that you have ticked the following two boxes: Use event driven mode Use TFTP Then under Advanced Set remote TFTP IP address This needs to be a value that is on the SAME subnet as the PC it is connected to. (My PC is on the 10.1.x.x subnet, your may not be) Page 6

This needs to be a value that is on the SAME subnet as the PC it is

7 Click LOAD Follow the on-screen instructions. *You need to hold in the reset button whilst powering-up the router Page 7

8 This is what you should see.. Page 8

9 Enter the serial number of the router (6 digits) when prompted Enter the hardware revision number when prompted The firmware upload process begins.. Page 9

10 ..And completes successfully 2.1 Cirrus boot a TA2020B modem The TA2020B has NO Ethernet port. The Cirrus boot procedure is the same except you will use the Serial connection only And you must un-tick all the boxes in the Flashwriter menu... The procedure is exactly the same however as it uses the serial connection it takes much longer. Page 10

The Cirrus boot procedure is the same except you will use the Serial connection only

11 3 WR41 AND WR41V2 IMX BOOT In the following example a WR41 that will not boot will be recovered The recovery process is as follows: Navigate to the flashwriter firmware section of the Digi website via this link Then select the firmware version for your particular model (WR-41) Normally you will choose the latest version. (But you can choose older versions if required. Here we used 5123) Extract the two files from the zip file WR all WR ini This is the.ini file ,n,8,1 setwanmodule, gensshkey, scan, time3, Amend the.ini file by inserting an extra line (imxboot,) before the scan as shown ,n,8,1 imxboot, setwanmodule, gensshkey, scan, time3, Page 11

(But you can choose older versions if required. Here we used 5123) http://ftp1.digi.com/support/firmware/sarian/flashwriter/5123/wr41/ Extract the two files from the zip file WR41-5123.all WR41-5123.

12 Next, navigate to the ftp firmware section of the Digi website via this link Extract the.rom file s595v36m.rom and rename its file name and extension as follows: s595v36m.rom rename it to WR sbios You now have three files which represent the IMXboot firmware WR all WR ini WR sbios You will need to have FlashWriter installed on your computer. You can download the latest version from here. Once installed, proceed as follows: Attach the Ethernet AND the Serial cable and then in FlashWriter select the appropriate COM port. Click LOAD and select the.all file to load Follow the onscreen instructions Page 12

ini WR41-5123.sbios You will need to have FlashWriter installed on your computer. You can download the latest version from here. http://ftp1.digi.com/support/firmware/flashwriter.

13 Select the W-WAN module when prompted... Page 13

14 Momentarily power off the router Enter the router s serial number (6 digits)... Page 14

15 Enter the router s hardware revision number. NOTE that when doing IMX BOOT you use the COM(n) setting NOT (ETH) (This is not so when doing a regular FlashWriter where you CAN use the ETH setting) Page 15

16 4 DR64XX MK 1 CENTILLIUM BOOT In the following example a DR6410 Mk I with Option module that will not boot will be recovered The recovery process is as follows: Navigate to the FlashWriter firmware section of the Digi website via this link Then select the firmware version for your particular model. Normally you will choose the latest version (5129 here you can choose older versions if required) Extract the two files DR64x0_MK_I_HSDPA_OPTION-5129.all DR64x0_MK_I_HSDPA_OPTION-5129.ini 1) Open FlashWriter 2) Connect a serial cable and a LAN cable 3) Select the.all file that you just extracted in the previous steps 4) Hold down the reset switch _while inserting the power 5) Continue to hold the reset switch down until you see the "flash blocks" loading firmware, then release the reset switch and let the router continue to boot as normal. Page 16

Normally you will choose the latest version (5129 here you can choose older versions if required) http://transport.digi.

17 Page 17

18 5 WR44 TESLA BOOT In the following example a WR44 that will not boot will be recovered The recovery process is as follows: Navigate to the FlashWriter firmware section of the Digi website via this link Get the.all file and.ini file for the router from the standard FlashWriter files. Extract the two files from the zip file WR all WR ini This is the.ini file ,n,8,1 setwanmodule, gensshkey, sendcommand,del config.da0, scan, Amend the.ini file by inserting an extra line (teslaboot,) before the scan as shown ,n,8,1 teslaboot, setwanmodule, gensshkey, sendcommand,del config.da0, scan, Page 18

com/support/firmware/transport/flashwriter/5131/wr44/ Extract the two files from the zip file WR44-5131.all WR44-5131.ini This is the.

Next, navigate to the ftp firmware section of the Digi website via this link http://ftp1.digi.com/support/firmware/transport/ftp/5131/wr44/ Extract the.rom file s607v39m.

19 Next, navigate to the ftp firmware section of the Digi website via this link Extract the.rom file s607v39m.rom and rename its file name and extension as follows: s607v39m.rom rename it to WR sbios You now have three files which represent the Teslaboot firmware You will need to have FlashWriter installed on your computer. You can download the latest version from here. Once installed, proceed as follows: Attach the Ethernet AND the Serial cable and then in FlashWriter select the appropriate COM port. Click LOAD and select the.all file to load Follow the onscreen instructions Page 19

sbios You now have three files which represent the Teslaboot firmware You will need to have FlashWriter installed on your computer. You can download the latest version from here.

20 Select the W-WAN module when prompted... Click OK and follow the on screen instructions The following screens will be displayed Page 20

21 Page 21

22 You will be prompted to enter the six digit router serial number You will be prompted to enter the router s hardware revision number Page 22

23 The new firmware is loading now... Finally after several checks the router completes the upgrade. Page 23

6 ERRORS AND HOW TO IDENTIFY THEM WR44 TESLA BOOT Some times when you may encounter an error like this... In which case, it is possible that you have a hardware problem.

24 6 ERRORS AND HOW TO IDENTIFY THEM WR44 TESLA BOOT Some times when you may encounter an error like this... In which case, it is possible that you have a hardware problem. The following procedure can help to identify where the problem is. Turn the router upside down (easier that way) connect a serial cable to the router's ASY 0 port and open up Teraterm or hyperterminal. Now, _hold in the reset button and then _insert the power connector. All the LEDs should light steady. Now look at the output of the serial port. You should see one of two things: Page 24

25 A stream of data 4 digits wide running continuously Vertically down the screen (This is Good) It shows that your serial cable is OK OR Page 25

26 A stream of garbage running Horizontally across the screen (This is Bad) Whichever output you see, contact further assistance. Page 26

Test a WR21 Router. How to test a WR21 router step by step. UK Support June 2015

Test a WR21 Router. How to test a WR21 router step by step. UK Support June 2015 Test a WR21 Router How to test a WR21 router step by step. UK Support June 2015 Contents 1 Introduction... 3 1.1 Outline... 3 1.2 Assumptions... 3 1.3 Corrections... 3 1.4 Version... 3 2 Physical Configuration...