[Help] Help in downgrading Huawei Honor 4c from Lollipop to Kitkat

Hi guyz,
I have Huawei Honor 4c Build Number CHM-U01C185B120 (kitkat 4.4.2)

I upgraded it to Build CHM-U01C185B310 (Lollipop 5.1.1)

I tried all available methods to downgrade with no hope here is what I did
[1] Flashing a Rollback package [C10B130] ------- Size=34 MB ------- Failed
[2] Flashing a Rollback package [C636Bxx] ------ Size=1.59 KB ------ Failed
[3] Flashing full package [C636 B330] ------------ Size=2.7 GB ------- Failed
[4] Flashing middle package [C636 B330] -------- Size=34 MB ------- Failed
what shall I do to downgrade my phone to kitkat?? please help me guyz

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