Sony not Sony Ericsson

I read in many source Sony decide not to use "Ericsson" behind "Sony"

I feel strange after buy Phone Sony Ericsson Live with Walkman.
My phone, WT19i, is the last Android Phone of Walkman Series.
When I want to update the Firmware but failed because PC Companion of Sony change its name.

My phone use "SONY ERICSSON PC COMPANION" but when I am connecting to internet and try to update the firmware, it's fail.
SONY changing name of PC COMPANION to "SONY PC COMPANION" without "ericsson".
then, I download SONY PC COMPANION and it work.
Firmware of my phone before update is .58. After I update the firmware, it change to .62

On the packaging is written upgradable to ICS 4.0, but until now ICS 4.0 is still not available to Sony Live with Walkman.
I will wait for it.