vxWorks kernel shell abilities

first of all sorry for my bad english. I have a car navigation system installed in my car and I figured out that it's run vxWorks 6.9.3.

What I'm trying to achieve is to change some hidden settings of the nav-system.

Small introduction: Nav system have ability to connect to internet via Bluetooth. I setup small web-server the only thing it can do is detect IP address of client. I opened that web-site from head unit browser and detected ip address of head unit. Than I'm able to scan for opened network ports of it. It's turned out that it have 23 port open. And I'm able to telnet there. It didn't required any password or login and it report operation system info: Windriver vxWorks 6.9.3

I can run various commands here, inspect filesystem, etc. But I don't know how I can change something. I even found the way to transfer files from USB-key from and to device.

I found that all settings which I want to change are stored in .sqlite files. Some of them are gzipped and have .inf file with check-sums. Algorithm of check-sum calculation is proprietary so I can't transfer .sqlite files from device to usb-key, change something, than gzip and calculate new check-sum.

I think OS can somehow interact with .sqlite files in-memory without ungzip them. So, is there any ways to open sqlite shell on device using vxWorks kernel shell? If yes, that would be perfect and enough to achieve anything I want.

If this can't be achieved, can somebody give me some advice of what possibilities I have from vxWorks kernel shell?

Thanks!