BQ27441-G1: How to put BQ27421-G1 in Hibernate Mode ?

Hi everyone,

I'm working on achieving low power consumption by putting my fuel Gauge BQ27441-G1 into Hibernate Mode.

According to my measurements, it consume 90μA on measurement, 20μA on idle but it's not low enough for my design.
Unfortunately the GPOUT pin is pull to VDD with a 10k resistor and not tied to my MCU (MSP430), so no shutdown is possible.

I have try to put my fuel gauge into Hibernate mode by writing 0x0011 in Control register 0x00 0x01:

I2C address 0x55 - Control Reg 0x00 - Data 0x00
then
I2C address 0x55 - Control Reg 0x01 - Data 0x11

But it seems that it doesn't work, so my question is am I writing in the right register or it's wrong ?

Thanks you in advance !