The "RC3" version specifically targeted firmware versions , 4.1 , and 4.2.1 . Its primary function was to solve the dreaded iTunes Error 1600, 1601, 1602, 1603, and 1604 that occurred when users tried to restore their devices to custom firmware (CFW) created by tools like PwnageTool or Sn0wbreeze. Key Features of iReb RC3
Inside, not code—but a voice transcript. ireb 40x 41 421 rc3zip link
Standard antivirus software may not scan .rc3zip by default because it is an unrecognized format. Malware authors exploit this to bypass email and web filters. The "RC3" version specifically targeted firmware versions ,