Download iPhone 5c GSM Firmware

After downloading the firmware from bellow,Press Shift key (Windows user) or Press Option key (Mac user) and then press Reset/Update button in iTunes.For more Details read this article or this article.
Note: Your browser may change the ipsw file into a zip file.In that case just rename it as .ipsw and then iTunes will accept the file.For more details please read those articles given above.

iPhone 5c GSM Firmware

• firmware version 7.1.2 (11D257) iphone5,4_7.1.2_11D257_Restore.ipsw_Size=1.28 GB_Release Date-20/6/2014 Download 
• firmware version 7.1.1 (11D201) iPhone5,4_7.1.1_11D201_Restore.ipsw_Size=1.26GB_Release Date-15/4/2014 Download
• firmware version 7.1.0 (11D167) iPhone5,4_7.1_11D167_Restore.ipsw_Size=1.28GB_Release Date-5/3/2014 Download
• firmware version 7.0.6 (11B651)iPhone5,4_7.0.6_11B651_Restore.ipsw_Size=1.24GB_Release Date-20/2/2014 Download
• firmware version 7.0.4(11B554a)iPhone5,4_7.0.4_11B554a_Restore.ipsw_Size=1.24GB_Release Date-12/11/2013 Download
• firmware version 7.0.3 (11B511) iPhone5,4_7.0.3_11B511_Restore.ipsw_Size=1.24GB_Release Date-16/10/2013 Download
• firmware version 7.0.2 (11A501)iPhone5,4_7.0.2_11A501_Restore.ipsw_Size=1.24GB_Release Date-25/9/2013 Download
• firmware version 7.0.1(11A470a)iPhone5,4_7.0.1_11A470a_Restore.ipsw_Size=1.24GB_Release Date-14/9/2013 Download