I've analyzed the text and identified several key points related to HashTools 4.8:

1. Description: HashTools 4.8 computes and checks hashes with just one click, supporting various hash types (CRC32, MD5, SHA1, SHA256, SHA384, SHA512) and SFVs.

2. Features:

* One-click access to calculate hashes

* Supports multiple hash algorithms

* Generates SFV files for files

* Integration with Windows Explorer context menu for easy access

3. Installation: To install HashTools 4.8, run the following command from the command line or PowerShell: `HashTools.exe`

4. Upgrade: To upgrade HashTools, run the same command as above.

5. Context Menu: HashTools can add itself to the Windows Explorer context menu for easy access to hash calculation functionality.

6. Hash Calculation: HashTools can calculate CRC32, MD5, SHA1, SHA256, SHA384, and SHA512 hashes for files.

Additionally, I found some information about the program's portability:

* The HashTools Portable version is a lightweight, install-free application that allows users to generate MD5 and SHA1 hashes on-the-go.

* This version provides a virus scanner client (Virustotal) that can be used to scan files locally.

Please let me know if you'd like me to clarify any of these points or provide further assistance!

HashTools 4.8 instal