In order to update the Sprint LG Optimus G to the latest Android 4.1.2 Jelly Bean ZVB, you have to first flash/return your device back to stock. The file attached below is the official stock ICS zv9 I got from official LG site, and this file is already converted from tot to bin
Official Sprint LG Optimus G ICS ZV9 Firmware / ROM Download:
For now in my option the easiest way to flash the Sprint LG Optimus G is using the LGNPST tool. You can download here:
I’ll post the instructions on how to flash/return/root/unlock Sprint LG Optimus G for the guys who are new to the device.
Update: Instructions
Sprint LG Optimus G Phone Photos - LG Cell Phone Pictures

LG showcased the Optimus L7 II, L5 II and L3 II at MWC 2013 latest month. The Optimus L7 II is the top of the L-Series II. It has a 4.3 inch IPS WVGA display, Quick Memo, VGA front-facing camera, 8MP rear camera with LED flash, 1GHz dual-core Qualcomm MSM8225 processor, 768MB of RAM, 4GB of internal memory, MicroSD card support and Android 4.1 Jelly Bean out of the box.
The handset measures 121.5 x 66.6 x 9.7 mm, and comes with a 2,460 mAh battery.
Official LG Optimus L7 II Firmware / Rom Download (145):
1. csmgdl.lgmobile.com/LGP713/AAGRBK/P71310A_00/P71310A_00.kdz
2. csmgdl.lgmobile.com/LGP715/AAGRBK/P71510A_00/P71510A_00.kdz
3. csmgdl.lgmobile.com/LGP715/AAGRBK/V10b_00/V10B_00.kdz
4. csmgdl.lgmobile.com/LGP713/AAGRBK/V10c_00/V10C_00.kdz
5. csmgdl.lgmobile.com/LGP715/AAGRBK/V10c_00/V10C_00.kdz
6. csmgdl.lgmobile.com/LGP715/AAGRBK/V10d_00/V10D_00.kdz
7. csmgdl.lgmobile.com/LGP713GO/AOPTWH/V10b_00/V10B_00.kdz
8. csmgdl.lgmobile.com/LGP710/AHASWH/V10b_00/V10B_00.kdz
9. csmgdl.lgmobile.com/LGP710/ABALBK/V10a_00/V10A_00.kdz
10. csmgdl.lgmobile.com/LGP710/ABALBK/V10b_00/V10B_00.kdz
11. csmgdl.lgmobile.com/LGP710/ABALBK/V10c_00/V10C_00.kdz
12. csmgdl.lgmobile.com/LGP710/ABALBK/V10d_00/V10D_00.kdz
13. csmgdl.lgmobile.com/LGP710/ATMNBK/V10a_00/V10A_00.kdz
14. csmgdl.lgmobile.com/LGP710/ATMNBK/V10b_00/V10B_00.kdz
15. csmgdl.lgmobile.com/LGP713/ACISBK/V10a_00/V10A_00.kdz
16. csmgdl.lgmobile.com/LGP715/ACISBK/V10a_00/V10A_00.kdz
17. csmgdl.lgmobile.com/LGP713/ACISBK/V10b_00/V10B_00.kdz
18. csmgdl.lgmobile.com/LGP715/ACISBK/V10b_00/V10B_00.kdz
19. csmgdl.lgmobile.com/LGP713/ACISBK/V10c_00/V10C_00.kdz
20. csmgdl.lgmobile.com/LGP715/ACISBK/V10c_00/V10C_00.kdz
21. csmgdl.lgmobile.com/LGP715/ACISBK/V10d_00/V10D_00.kdz
22. csmgdl.lgmobile.com/LGP715/ACISBK/V10e_00/V10E_00.kdz
The Optimus L5 II was officially announced last week at MWC, alongside two other new L Series II handsets: Optimus L3 II and Optimus L7 II.
The LG Optimus L5 II runs Android 4.1.2 Jelly Bean, packs a 4 inch WVGA display, 3G, Wi-Fi, GPS, 1GHz single core processor, PowerVR SGX531 GPU, and MicroSD card support.
Official LG Optimus L5 II Firmware / Rom Download (163):
1. csmgdl.lgmobile.com/LGE455/AAGRBK/E45510B_00/E45510B_00.kdz
2. csmgdl.lgmobile.com/LGE450/AAGRBK/V10a_00/V10A_00.kdz
3. csmgdl.lgmobile.com/LGE450/AAGRBK/V10b_00/V10B_00.kdz
4. csmgdl.lgmobile.com/LGE455/AAGRBK/V10c_00/V10C_00.kdz
5. csmgdl.lgmobile.com/LGE460/ATMAWH/V10a_00/V10A_00.kdz
6. csmgdl.lgmobile.com/LGE460/ATMAWH/V10b_00/V10B_00.kdz
7. csmgdl.lgmobile.com/LGE460/ABALBK/V10d_00/V10D_00.kdz
8. csmgdl.lgmobile.com/LGE460/ABALBK/V10f_00/V10F_00.kdz
9. csmgdl.lgmobile.com/LGE450F/ABRABK/V10a_00/V10A_00.kdz
10. csmgdl.lgmobile.com/LGE450F/ACLRBK/V10a_02/V10A_02.kdz
11. csmgdl.lgmobile.com/LGE455F/ABOIBK/V10a_02/V10A_02.kdz
12. csmgdl.lgmobile.com/LGE450F/ABRABK/V10c_00/V10C_00.kdz
13. csmgdl.lgmobile.com/LGE455F/ABRABK/V10e_00/V10E_00.kdz
14. csmgdl.lgmobile.com/LGE455F/ABRABK/V10g_00/V10G_00.kdz
15. csmgdl.lgmobile.com/LGE450B/ABLMBK/V11c_00/V11C_00.kdz
16. csmgdl.lgmobile.com/LGE450G/ACAOBK/V10a_02/V10A_02.kdz