If you are asking for very latest firmware for PAP2 device, e.g. 3.1.23 LS, then it is attached here: . But some users claim that only fearless administrator should install it, so the 3.1.22 LS recovery tool may be useful for you as well. It is available here: and may be used not only on bricked device, but for regular upgrade as well (select the "Upgrade Firmware" option instead of "Recover Firmware" in its initial dialog).
SPA2100 firmware/recovery tool 3.3.14 seems to be here: