For example:
We cannot install the 6.0.3 patch directly on the 6.0.0 base version, unlike hotfixes. Because 6.0.3 does not contain fixes for versions 6.0.2 and 6.0.1.
if we directly install 6.0.3 on top of 6.0.0 we will get error as below:
========================
SEVERE [main] org.apache.catalina.core.ContainerBase.addChildInternal ContainerBase.addChild: start:
 org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/livecluster]]
        at org.apache.catalina.util.LifecycleBase.handleSubClassException(LifecycleBase.java:441)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:198)
        at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:742)
        at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:718)
        at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:703)
        at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1141)
        at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1876)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
        at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:112)
        at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:1053)
        at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:428)
        at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1585)
        at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:308)
        at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:123)
        at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase.java:424)
        at org.apache.catalina.util.LifecycleBase.setState(LifecycleBase.java:367)
        at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:966)
        at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:839)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
        at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1427)
        at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1417)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
        at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134)
        at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:943)
        at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:258)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
        at org.apache.catalina.core.StandardService.startInternal(StandardService.java:422)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
        at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:770)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
        at org.apache.catalina.startup.Catalina.start(Catalina.java:682)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:350)
        at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:492)
Caused by: java.lang.NoClassDefFoundError: Lorg/apache/logging/log4j/Logger;
        at java.lang.Class.getDeclaredFields0(Native Method)
        at java.lang.Class.privateGetDeclaredFields(Class.java:2583)
        at java.lang.Class.getDeclaredFields(Class.java:1916)
        at org.apache.catalina.util.Introspection.getDeclaredFields(Introspection.java:110)
        at org.apache.catalina.startup.WebAnnotationSet.loadFieldsAnnotation(WebAnnotationSet.java:269)
        at org.apache.catalina.startup.WebAnnotationSet.loadApplicationFilterAnnotations(WebAnnotationSet.java:109)
        at org.apache.catalina.startup.WebAnnotationSet.loadApplicationAnnotations(WebAnnotationSet.java:68)
        at org.apache.catalina.startup.ContextConfig.applicationAnnotationsConfig(ContextConfig.java:328)
        at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:768)
        at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:299)
        at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:123)
        at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5007)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
        ... 38 more
Caused by: java.lang.ClassNotFoundException: org.apache.logging.log4j.Logger
        at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1309)
        at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1138)
        ... 51 more12-Apr-2023 12:56:20.128 SEVERE [main] org.apache.catalina.startup.HostConfig.deployDirectory Error deploying web application directory [/home/ec2-user/fabric/webapps/livecluster]
 java.lang.IllegalStateException: ContainerBase.addChild: start: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/livecluster]]
        at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:746)
        at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:718)
========================

For example:
The right approach to installing the 6.0.3 version is as below:
A] Install the 6.0.0 base version
B] Apply the 6.0.1 minor version patch on the 6.0.0 base version (java -jar jJAR_FILE_NAME /path_SF_HOME/livercluster/webapps
C] Apply the 6.0.2 minor version patch on 6.0.1 as mentioned in step B]
D] Apply the 6.0.3 minor version patch on 6.0.2 as mentioned in step B]
E] You can start the SF broker and you are ready to set it up further through GUI.