1.Download
these file for downgrade.
2. Extract files to a folder on your computer.
3.Downlaod ODIN
4.Open ODIN tool and selct the following files accordingly
after checkboxing them as shown below
PDA :
CODE_GT-I9070_I9070DXLD1_CL1068093_REV00_user_SEC_KEY_LD1_ 8G.tar.md5
CSC: CSC_GT-I9070-MULTI-CSC-OLBLD1_SEC_KEY_8G.tar.md5(If you found no such file IGNORE it)
CSC: CSC_GT-I9070-MULTI-CSC-OLBLD1_SEC_KEY_8G.tar.md5(If you found no such file IGNORE it)
PHONE : GT-I9070_EUR_XX_8G.pit (If you found no such file IGNORE it)
You are DONE.ENJOY!!!!!