Huawei HG659b GPL responsibilities?

Hi all.

I have an Spark/Huawei HG659b modem lying around, and I wanted to get the source code to mess around with.

As I understand it, they have to provide it as busybox and other bits are covered under GPL. Am I correct, or am I missing something?

I contacted their support and they basically told me it's out of their scope and to go ask Huawei. I would rather not do this as all the ISPs using this modem seem to roll their own firmware for it and I'd prefer to have the Spark version.

Are they allowed to say no, or is it not their responsibility since they don't actually make the hardware, or am I just wrong?

Thanks,

Matthew