I've just read the document closely.

Your work is excellent!!
Perhaps, you've checked Protector's action again and again.

Can I add the URI of your document into my protector's README?

--------------------------------------------------
A typo I've found.

Section) Upgrading from Protector V2.x
5.Define the XOOPS_ROOT_PATH as per installation procedure step 6 above.

- should be "XOOPS_TRUST_PATH"


A question mark

Section) Preferences
"Loggin level"
quiet [duplication - error?].

- no "Quiet" is quieter than "quiet" (It is common way for unix commands)