Here you can download the Official Firmwares (IPSW files) for all Apple iPod Models and generations, Alllinks are direct download links from Apple servers with resume support.
1.1: iPod1,1_1.1_3A101a_Restore.ipsw (Download)
1.1.1: iPod1,1_1.1.1_3A110a_Restore.ipsw (Download)
1.1.2: iPod1,1_1.1.2_3B48b_Restore.ipsw (Download)
1.1.3: iPod1,1_1.1.3_4A93_Restore.ipsw (Download)
1.1.4: iPod1,1_1.1.4_4A102_Restore.ipsw (Download)
1.1.5: iPod1,1_1.1.5_4B1_Restore.ipsw (Download)
1.1: iPod1,1_1.1_3A101a_Restore.ipsw (Download)
1.1.1: iPod1,1_1.1.1_3A110a_Restore.ipsw (Download)
1.1.2: iPod1,1_1.1.2_3B48b_Restore.ipsw (Download)
1.1.3: iPod1,1_1.1.3_4A93_Restore.ipsw (Download)
1.1.4: iPod1,1_1.1.4_4A102_Restore.ipsw (Download)
1.1.5: iPod1,1_1.1.5_4B1_Restore.ipsw (Download)