Solution for SQL Server 2000 not being patched with sp4

Everyone and so on have set the permission. The system rejects the permission, but you still can read it without knowing why. everyone has all the permissions. I used CACLS to change the permission, but there are still problems with restarting, add an account to report the permission. If the permission is null, the account has already been resolved. In my other article. However, the default port 1433 of MSSQL2000 cannot be connected. after a long time of investigation, many of them say "Modify the port, patch, or something". Then I began to reinstall the SP4 patch, however, it still fails after repeat. The version number is shown as 8.00.194, Which is depressing. Why is the prompt for success still not upgraded to SP4? The problem is concentrated here.
Run the following command to view the version:
Select serverproperty (ProductLevel)
SELECT @ VERSION
Select serverproperty (ProductVersion)
If you find a lot of methods on the Internet, you can find a solution when you give up. The specific method is as follows:
Overwrite the inn directory in SP4 patch to mssqlinn in the MSSLQ2000 installation directory.
This is all done, but I don't know if there is any danger. Remember to back up the data when you overwrite it!
 
Appendix 1: How to view the SQL version
Enter "Select @ Version;" in "query analyzer" or click "about" in "query analyzer"
Appendix 2: Relationship between version numbers and patch numbers
8.00.194 ------- SQL Server 2000 RTM
8.00.384 ------- (SP1)
8.00.534 ------- (SP2)
8.00.760 ------- (SP3)
8.00.2039 ------- (SP4)
Appendix 3: Check port 1433 availability
Enter "cmd" in "run" in the Start menu, and enter "netstat-an" in "cmd". If 1433 is found in the following list, it indicates that it has been enabled.
You can also enter "telnet localhost 1433" in "cmd" to check whether the connection can be established. If the connection succeeds, the system jumps to "telnet localhost". If the connection fails, the system prompts "the connection to the host cannot be opened, in port 1433: connection failed ".
Appendix 4: view or modify the default port of MSSQL2000
Open "client network utility", click "TCP/IP", and then click Properties.