Thomson B9 Pro Firmware Update

[Sherman Desrosiers]

lookingat the specs sheet i am sad to say it is impossible to flash it to an open firmware as it is a modem and router combo. that modem part is what presents the biggest challenge as it contains code that is closed and cannot be replaced with an open version thanks to docis being made by the internet company's to prevent people from having unmetered and unrestricted speed.

Yeah, that's my least favorite feature of ISP-provided routers. I'd put the combo box in "bridge mode" or "modem only" mode, then just buy/build a "real" router so you can do whatever you want. I don't trust ISP routers...lol

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As such, this is off-topic for these forums. Questions of this nature are best directed towards the vendor (or firmware maintainer) and/or user forums that support this device or general networking topics.

This seems to be a DOCSIS 3.0 cable modem/ router/ VoIP gateway, but OpenWrt can't support that (cable modems do need to cryptographically authenticate themselves and their running firmware with certificates to the ISP, so that's a no-go to begin with). This means while the device might be supportable, the cable modem functionality can't ever be (by definition, there's no ISP going to accept an unsigned/ self-signed firmware on a DOCSIS modem). The next problem is going to be the SOC and its peripherials, cable modems are basically only produced by Broadcom (yes, with a tiny market share for the Intel Puma chipset, and fractions for specialty manufacturers), while I can't find hardware specifications for your device off hand, chances are very high that it's using a Broadcom SOC, wireless and peripherials, modem, and VoIP cores. As mentioned in the link above, there is basically no support at all for Broadcom wireless chipsets above 802.11g (54 MBit/s), so it's safe to consider the wireless capabilities to be basically unsupportable (or at least barely so, unstable and limited to 54 MBit/s). Broadcom VoIP related IP cores are even worse than the wireless situation, there is no support for those at all, so no phone capabilities either. Coming back to the SOC itself, it's probably going to be Broadcom ARM - and most likely NAND based flash, which is kind of a problem as well, as the boot concept for those requires parts of the proprietary bootloader to be embedded in the (hypothetical OpenWrt-) firmware image. This poses a legal problem, which is the reason why most of these types of devices aren't supported by OpenWrt (the resulting firmware images would be non-redistributable).

While non-OpenWrt firmwares are out-of-scope for this forum, the need for signed DOCSIS firmware prohibits 3rd party firmware for cable modems alltogether, so you're not very likely to find any elsewhere - leaving you with the official distribution channels only (e.g. Thomson or your ISP via TR-069).

Well supported (by OpenWrt) devices (without included cable modems, if you need DOCSIS, you'll need a dedicated modem in bridge mode) are plenty to choose from, well into the highend domain - sometimes even surprisingly cheap (especially on the used markets).

As the Lead FPGA Firmware Design Engineer, you will take a leading position in the development of cutting-edge embedded systems firmware for various electronics used in our power converter systems. You will play a key role in the entire product development life cycle and collaborate as part of a wider multi-disciplinary team.

I am new to openWRT but I got references to openWRT in relation to my 'quest'.

I have a dozen used Thomson TG789vn and TG789ivn routers available for reconfiguration.

I hope to use them to facilitate free WIFI access in exchange for a Facebook like (for example).

I have a lot of Java experience and some linux experience.

Questions I have:

- can openWRT help me achieve this?

- can openWRT be loaded on my Thomson routers?

- Is there any other easy and free way to achieve my goal?

Well they aren't officially unsupported ( ).

But it seems nobody has tried them.

OTOH Thomson produce a lot of crud.

It is a fairly involved task to port openWRT to new hardware, particularly if the stock firmware on the device isn't open source (as in the Thomson case - I think).

Take a look at the link above and see if there are supported Thomsons with similar chips to those yours contain (yup, screwdriver required!).

Good luck.

Thanks for the quick reply!

I do not care too much how to solve my challenge, as long as I get it done.

I am also looking at a possible Java Proxy solution, but no clue how to auto insert the proxy so any device connecting to the Thomson wifi will go through the proxy and it's facebook like 'barrier'....

As said earlier I am pretty novice still. I am a quick learner and open to any possible solution path. As long as I can reuse my Thomson routers. A separate proxy server or any other type of server is possible too, as long as there is a way to get the thomson to always go through that one server, so I can enforce the facebook challenge before opening the wifi for that device to open internet

Give it 24 hours. Maybe someone has hands on experience with this hardware.

Otherwise it is down to you! Obviously people will try and help, but you have the hardware.

On openwrt.org, check the docs and wiki for flashing, and for recovering bricked routers. Also the links I gave above.

It might well be that Attitude Adjustment (current stable) or Snapshot/trunk (work in progress) will mostly work. But as in most things openWRT, there are no guarantees!

I expect this bootloader will work. Let me know if the serial console returns something after flashing, and if the bootloader work, check if you can ping to its address 192.168.1.1, or browse its web interface

I'll try the CFE too. I have those TG789xx routers as well, also supplied in The Netherlands by the ISP KPN. I might just directly flash it into the chips. Those thomson routers have no pre-loader, right?

How did you make the CFE by the way? I'm in need of customised CFE's for my own hacking on a few ZTE DSL routers with very similar hardware, but I haven't really looked into it that much since the ZTE routers use a pre-loader that loads before the CFE. I'm working on the devices at: =61480

Hi rqn. I built the CFE using the sourcecode I found from a Netgear router, with a few modifications (nothing really important). This particular router has a SoC with no preloader. The CPU just executes the binary code found in the flash chip at offset 0x0.

The BCM63168 probably is a bit different. No idea if it has a preloader. Looks like your router has two bootloaders ROM and RAM. This is usually found in bcm963xx boards with NAND flashes, but not Parallel or SPI NOR flash chips like yours.

Yeah, mine must be slightly different. It has the same preloader as two other models (same ISP firmware, also made by ZTE). One model above this one and one model below this one. The others have NAND flash, while this one has 2x NOR SPI flash.

The preloader seems common between multiple ZTE devices, I should maybe ignore it and focus on the CFE itself, of figuring out the CFE variables that turn off the console. For now, it's ACS/CWMP/TR069 hacking.

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A few months ago, I had successfully updated the firmware on my Thomson TG585 v8 router to version 8.2.7.8 when I also found out that I could connect to it via telnet, as per my previous post.

Recently, due to connectivity problems, my ISP requested that I perform a factory reset on the device. After solving those connectivity problems, I realised that access via telnet was not possible anymore. The weird thing was that I had not changed any settings on either router or computer, so this problem got really puzzling.

Finally, I found the reason why this was happening, as well as a working solution from member ZhenXlogic over the Greek forum at www.adslgr.com which I replicate here, in English, for those of you that could not easily find a solution, yet. The steps are easy.

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