I can't find anything about this modem - if I HAD to use the modem I'd pull the flash chip off and dump it, then reflash it, but it requires some specialized hardware to do it, I suppose you could do it with a USBJTAG NT, but I don't know much about that.
I would put the modem on eBay or craigslist myself and get a SB61xx series or a Ubee u10c035, I'm a fan of the Ubee modems, I see them pop up on eBay for $25-30 bucks often and they're good modems (I had one survive a lightning strike that hit a power pole and ended up entering the house via the cable line, blew out all the cable boxes and TV's, the modem survived!), plus most of them can be flashed directly from uboot AND some of them have a telnet server running on the stock firmware! Though, I don't know how many people are using Ubee's so I'm not sure how much info is publicly available.
I would put the modem on eBay or craigslist myself and get a SB61xx series or a Ubee u10c035, I'm a fan of the Ubee modems, I see them pop up on eBay for $25-30 bucks often and they're good modems (I had one survive a lightning strike that hit a power pole and ended up entering the house via the cable line, blew out all the cable boxes and TV's, the modem survived!), plus most of them can be flashed directly from uboot AND some of them have a telnet server running on the stock firmware! Though, I don't know how many people are using Ubee's so I'm not sure how much info is publicly available.