Questions about update.zip file

[Claude Speed]

When you do a update via update.zip file, what it does? Adds files from update file or starts from scratch? I really need to know what update file does

Posted via the Android Central App on eSTAR CRYSTAL tablet

 

[Claude Speed]

Please answer!

Posted via the Android Central App on eSTAR CRYSTAL tablet

 

[Claude Speed]

Please answer the question!

Posted via the Android Central App on eSTAR CRYSTAL tablet