Looking for K-factor Override Flag in bq3055

The "bq2055 tech ref.pdf" makes reference to the K-factor Override Flag

It describes is thus;

C.2.1.7 K-factor Override Flag

This register value is by default 0, indicating that the factory calibrated K-factors are being used. If this
register is set to 0x9669, VC1~VC4 K-factors in the data flash are used for voltage translation

However it does not describe how to access this register: nor can I find any information about it on the web.

I would be grateful for information on this (or the factory calibration of the chip in general) as several of our boards with the bq3055 appear to be reading suspiciously low battery voltages and as such never achieve primary charge termination.

Thanks for your help.

Regards,

Richard