Great news for all HP 8100i users. A new firware upgrade is available that enables overburning + the full use of 80min cd's. It is similar to the one brought out for the sony crx100(This is the same unit as the HP 8100i, exept with one LED instead of 2 LED's).
Some people tried to use the Sony CRX100 firmware with their 8100i and found it successful except that the drive was recognised by the computer as a Sony CRX100, thus not allowing the firmware to be downgraded.
This HP firmware (not endorsed by HP) is simply a hacked version of the sony firmware. It does the same job, but more importantly, remains a HP8100i allowing the firmware to be changed again for any reason.
The file can be found at: here