Legacy iOS 2, 3, 4 Jailbreak Tools (PwnageTool 2.0.3.1, 2.2.5, 4.2; redsn0w 0.9.3, 0.9.4)

Here are the long forgotten tools for Jailbreaking iPhone, iPhone 3G and iPhone 3GS.

PwnageTool 2.0.3.1 for Jailbreaking iOS 2.0, 2.0.1 and 2.0.2
PwnageTool 2.2.5 for Jailbreaking iOS 2.1 and 2.2.1
PwnageTool 4.2 for Jailbreaking iOS 4.2.1
redsn0w 0.9.3 for Jailbreaking iOS 3.0 - 3.1.2
redsn0w 0.9.4 for Jailbreaking iOS 3.1.3 (use 3.1.2 IPSW)

also:

iDecryptIt for decrypting system DMG inside IPSW (Mac)
iDecryptIt for decrypting system DMG inside IPSW (Windows)
RecBoot for exiting Recovery Mode after downgrading iPhone & iPhone 3G