The specific versions mentioned in the keyword——represent some of the most iconic versions of iOS. During this era, tools like Sn0wbreeze were used to create custom firmware for devices like the iPhone 3GS and iPhone 4. Key Features of iREB RC3
Verified legacy versions are often hosted on community archives like The Apple Wiki . How to Use iREB (Historical Context)
Downloading zip files from unverified sources with tags like "extra quality" can be risky. Always use trusted developer repositories or community-vetted wikis to avoid malware. iREB - The Apple Wiki