Kernel upgrade issue from 720_401 to 720_700

Hello All,

Recently we started upgrade the Kernel on PI system

I started to upgrade the Kernel from 401 to 700 , and its worked

Then i started to upgrade the JVM from 6.31 to 6.65 , Deployment stopped with errors as Java was not came up

So i reverted back the Kernel to 401 , i Started the JVM upgrade again . it was completed ,

Again i tried to Upgrade Kernel 720_700 , but the Java was not came up ,

Then finally i upgraded to Kernel 600 , now Abap/Java was fine,

Here my Question is , is Kernel 720_700 has dependency of 600 Kernel

My Environment is

Susu linux 11

Oracle 11.2.0.3.0

SAP NetWeaver AS ABAP 7.31