Searching for iPod Touch 4G, iPod Touch 3G, iPod Touch 2G, iPod Touch firmware restore .ipsw links? Below is a list of direct links for every firmware released.

Note: Updates will be posted as the latest firmware versions are released (latest version iOS 5).

1.1: iPod1,1_1.1_3A101a_Restore.ipsw
1.1.1: iPod1,1_1.1.1_3A110a_Restore.ipsw
1.1.2: iPod1,1_1.1.2_3B48b_Restore.ipsw
1.1.3: iPod1,1_1.1.3_4A93_Restore.ipsw
1.1.4: iPod1,1_1.1.4_4A102_Restore.ipsw
1.1.5: iPod1,1_1.1.5_4B1_Restore.ipsw
2.0.0: iPod1,1_2.0_5A347_Restore.ipsw (Must purchase through iTunes)
2.0.1: iPod1,1_2.0.1_5B108_Restore.ipsw
2.2.0 (1G): iPod1,1_2.2_5G77_Restore.ipsw
2.2.0 (2G): iPod2,1_2.2_5G77a_Restore.ipsw
2.2.1 (2G): iPod2,1_2.2.1_5H11a_Restore.ipsw
3.1.2 (3G): iPod3,1_3.1.2_7D11_Restore.ipsw
3.1.3 (3G): iPod3,1_3.1.3_7E18_Restore.ipsw
4.0.0 (2G): iPod2,1_4.0_8A293_Restore.ipsw
4.0.0 (3G): iPod3,1_4.0_8A293_Restore.ipsw
4.0.2 (2G): iPod2,1_4.0.2_8A400_Restore.ipsw
4.0.2 (3G): iPod3,1_4.0.2_8A400_Restore.ipsw
4.1.0 (2G): iPod2,1_4.1_8B117_Restore.ipsw
4.1.0 (3G): iPod3,1_4.1_8B117_Restore.ipsw
4.1.0 (4G): iPod4,1_4.1_8B117_Restore.ipsw
4.2.1 (2G): iPod2,1_4.2.1_8C148_Restore.ipsw
4.2.1 (3G): iPod3,1_4.2.1_8C148_Restore.ipsw
4.2.1 (4G): iPod4,1_4.2.1_8C148_Restore.ipsw
4.3.0 (3G): iPod3,1_4.3_8F190_Restore.ipsw
4.3.0 (4G): iPod4,1_4.3_8F190_Restore.ipsw
4.3.1 (3G): iPod3,1_4.3.1_8G4_Restore.ipsw
4.3.1 (4G): iPod4,1_4.3.1_8G4_Restore.ipsw
4.3.2 (3G): iPod3,1_4.3.2_8H7_Restore.ipsw
4.3.2 (4G): iPod4,1_4.3.2_8H7_Restore.ipsw
4.3.3 (3G): iPod3,1_4.3.3_8J2_Restore.ipsw
4.3.3 (4G): iPod4,1_4.3.3_8J2_Restore.ipsw
4.3.4 (3G): iPod3,1_4.3.4_8K2_Restore.ipsw
4.3.4 (4G): iPod4,1_4.3.4_8K2_Restore.ipsw
4.3.5 (3G): iPod3,1_4.3.5_8L1_Restore.ipsw
4.3.5 (4G): iPod4,1_4.3.5_8L1_Restore.ipsw
5.0 (3G): iPod3,1_5.0_9A334_Restore.ipsw
5.0 (4G): iPod4,1_5.0_9A334_Restore.ipsw
5.0.1 (3G): iPod3,1_5.0.1_9A405_Restore.ipsw
5.0.1 (4G): iPod4,1_5.0.1_9A405_Restore.ipsw

Check out Where To Download iPad Firmware Restore Links, Where To Download iPhone Firmware Restore Links, and iJailbreak Downloads Section.