>
> It looks like it is probably a Qualcomm-based device. It seems likely
>
> that as things are now, it will attach to umsm. I can't say for sure if
>
> it will work or not though I think there is a fairly good chance.
>
> But unless you are lucky and somebody already used the same device,
>
> you will need to buy one to find out for sure.
>
> If it does work, while attached to umsm there should be several com
>
> interfaces presented, one of which is likely to accept AT commands
>
> so you can find strength that way. For umsm, you will need to mess
>
> about with pppd to get it to connect to the internet.
>
> The device would probably support working with umb(4) but would need
>
> some extra work (maybe as simple as moving the vendor/product ID to umb(4),
>
> but it may need more...so far I have a success rate of about 33% with umb
>
> devices, including some devices which are even listed in the manpage -
>
> the firmware on the device matters too, not just the chipset).
>
> There is no support for displaying signal strength directly via umb,
>
> and the other com ports are only available via umsm, so in that case you
>
> can't send AT commands to find it either..
>
> This device is cat4 only (no MIMO, no channel aggregation) so speed won't
>
> be amazing.
>
Hello, thank you very much for your help.
I bought the toy and it seems it works, but it stuck when I run fw_update at
around 10% or 20%. In the log I found messages like:
ppp0: bad fcs 59f8
ppp0: bad protocol 728a
ppp0: packet too big
ppp0: bad fcs baf0
ppp0: bad protocol debc
ppp0: bad fcs and so on.
The strange thing is that when I press ctrl+c to break the ppp connection I
lose all the connections I have with box. I mean lan and serial connections.
I don't know if the box is stucked or it's just the connection. But I find very
strange that I lose the serial connection. Obviously the box is headless. It's
just a simple
raspberry.
FCS stand for "Frame Check Sequence" and it seems a kind of ppp checksum.
Maybe I'm in a spot where the signal is weak. I'll try to move the dongle.
Cord
