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Playing around with a TRB140 - it was on firmware TRB1401_R_00.01.06.1 and I followed the instructions to upgrade the legacy firmware by attempting to flash to TRB1401_R_00.02.03.2_LEGACY it all seemed to go through fine but now it won't boot and the signal strength indicators are flashing the following.

4th light blinks twice really fast and then all 5 blink twice with a 1 second gap.. the cycle continues ad nauseum.

Is this flashing an error code that can be found somewhere ?

I've tried restarting, power cycling, factory resetting, remove / install sim etc but nothing seems to take it out of this cycle  (except factory reset which blinks all 5 for hours so guessing it's not doing much)

The usb connection doesn't show up in my OS anymore, and direct ethernet doesn't seem to work either.

Anyone else ever had this problem ?

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Hello,

Please try reinstalling the software this way:

* Turn off/unplug TRB140;
* Press and hold reset button, at the same time plug the power cable and keep holding reset button for about 5 seconds (mobile signal LED's should start blinking);
* Download and install adb from this link: https://kaunas.teltonika.lt:444/f/412898b1c8d243959cea/?dl=1 ;
* Open CMD with admin rights;
* Download rootfs.ubi from this link: https://kaunas.teltonika.lt:444/f/90f9dda8ada84b85b955/?dl=1 ;
* Use cd command to navigate to the place where you saved the rootfs.ubi file (Example: cd C:\Users\mark.ju\AppData\Local\Temp);
* Then use this command: fastboot flash rootfs_a rootfs.ubi;
* When it completes the process use this command: fastboot flash rootfs_b rootfs.ubi;
* When it is done unplug and plug your device again, it should boot up as normal;
* Install Legacy firmware again through WebUI. Download link: https://wiki.teltonika-networks.com/view/TRB140_Legacy_FW_Upgrade_Instructions ;
* Install the latest software through WebUI. Download link: https://wiki.teltonika-networks.com/view/TRB140_Firmware_Downloads .

Let me know how it goes!

Regards,
Justin
by

Hey Justin,

Thanks for the points to try, but they still resulted in a un-bootable device, In the end I followed along with this https://community.teltonika-networks.com/22815/trb140-0-bricked and it 'sortof' worked but I don't have access to the WebUI ( it just throws 403 access denied ) but the device does boot and I can ssh into it.

Are there any instructions handy to install the WebUI package onto the devices ( I'm assuming it's not installed or maybe it's misconfigured with wrong file permissions or something )

On a side note, when I generated the images from the SDK with make it generated 2 files

TRB1401_GPL_00.02.05.1_STATIC.bin & TRB1_R_GPL_00.02.05.1_WEBUI.bin

I extracted the *STATIC.bin and used the kernel/boot files to flash the device ( which got it booting ),

I then ran sysupgrade TRB1_R_GPL_00.02.05.1_WEBUI.bin on the router via ssh ( after scp'ing the file over ) but after reboot the /www folder is empty, which is what's causing the 403 errors, calling something like http://[routerip]/cgi-bin/cli does work which makes sense cause uhttpd is running on the box..

So where is the contents of /www and how do I get it back ?

Thanks again for pointing me in the right direction, hoping I can get this working otherwise $$$ and pain...
 

Cheers
Matt

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Just to confirm, when you were installing the FW I provided, logs showed, that rootfs_a and rootfs_b were sucessfully installed, but the device was still unreachable via SSH and HTTP(s) after reboot?

Regards,
Justin
by

Hey Justin,

Yeah the firmware you provided did seem to install OK

But it resulted in the same blinking pattern as the first comment and it never creates a USB ethernet bridge so I can't ssh / https access it - fastboot always works thankfully so I've been able to try different things, the only thing that seems to work is the above sdk builds - but they seem to lack the WebUI part of the experience.

Regards,

Matt

by
Hello Matt,

It might be that you haven't enabled menuconfig in luci when you compiled that FW.

I have done that for you, you can download it here:

https://kaunas.teltonika.lt:444/f/e9c3fc7c3e834237ba3d/?dl=1

Try installing that via fastboot and see whether that fixes WebUI.

Regards,
Justin
by

Hey Justin,

It worked !!, I can't believe it's been resurrected thank you so much !

For future reference, how did you enable luci in the openwrt build, I looked everywhere in the make menuconfig options and I couldn't find luci in any of the sections ( I did suspect it wasn't being included ).

Thanks again for all your help,

If this ever happens again at least I have a solution to get things unbricked now :D

Cheers,

Matt

by

I wrote the below but then factory reset the device after the firmware update and the modem started working again...

Still curious as to how you get LuCI into the openWRT build though, I do plan on adding custom software to images so I'd like the WebUI to work when I try that.

Hmm, I seem to have the same issue as these now

https://community.teltonika-networks.com/20615/trb140-firmware-upgrade-4g-modem-stops-working

https://community.teltonika-networks.com/20706/trb140-modem-does-not-work?show=20706#q20706

starting to wonder how reliable these devices are going to be :|

by

Hello,

It is really strange, that you are experiencing these issues. I only managed to brick my device by forcing bad FW files through fastboot.

But even then I installed https://kaunas.teltonika.lt:444/f/90f9dda8ada84b85b955/?dl=1 via fastboot, then installed correct Legacy FW via WebUI (https://wiki.teltonika-networks.com/view/TRB140_Legacy_FW_Upgrade_Instructions) and it worked just fine.

My suggestion would be for you to try that sequence one more time and if that does not fix the issue, there might be a HW defect and you would need to send that device to your supplier for repairs.

Regards,
Justin

by
Hey Justin,

Sorry my last post might not have made sense, I factory reset the device after firmware install and the modem started working again so the device is functional again.

If you have instructions for adding LuCI to the openwrt build that would be great though in case I ever need to rebuild it for new firmware or adding custom services etc.

Thanks again for all your help :)

Regards

Matt
by
Hello Matt,

You can find SDK instructions here:

https://wiki.teltonika-networks.com/view/RUTX_Software_Development_Kit_instructions

Regards,
Justin
by
Hey Justin,

Yeah I followed that guide as well but nowhere in the process did I see anything related to LuCI and nor did it get compiled in the firmware that got spat out.

I'll have another go if and when it ever gets bricked again.

Thanks for all your help

Matt