DPC2100r2 Latest OEM Firmware?

[ricktendo]

I cannot log into my modem (I get this error,) here are the details:

Code:

Descripcion: S-A WebSTAR DPC2100r2 Series DOCSIS Cable Modem Ethernet+USB <<HW_REV: 2.0; VENDOR: S-A; BOOTR: 2.1.6; SW_REV: v2.0.2r1244-050203; MODEL: DPC2100r2>>

I would like to attempt to update the firmware on the modem with another original firmware dump (my ISP will not update,) but would like to try the OneClickFlash method (I don't have serial stuff) but I unsure if its safe this way

Anybody know the latest OEM firmware out there for this model, and is it safe to use snmp/tftp over lan to update it?

If so do I still need to use these commands used when flashing haxorware for forcing longer/unsigned firmware?

set 1.3.6.1.4.1.4413.2.99.1.1.2.4.2.2.2.4.0 i 1 (con esta le decimos ke acepte firm largos)
set 1.3.6.1.4.1.4413.2.99.1.1.2.4.2.2.2.5.0 i 1 (con esta aceptara forzar los header del firm ya no es necesari cambiar el signature)

Also, if I were to go the serial route, what tools (cable, etc.) would you guys recommend I purchase? (ebay links would be nice)

Thanks in advance