H1B Visa Transfer to new company before joining petitioner

[sansu]

Dear All,

I am having H1B from YYY company approved and stamping done and passport received. But not traveled to US.

Now my current company YYYY is ready to offer me job at US.

What is the option
Do YYYY need to apply for H1B transfer or YYYY need to apply for new one in 20130-14 quota.

Please clarify.

Regards
Sansu