[Q] Problem in downgrade or upgrade firmware

[HandyAIA]

I flashed huawei ascend g6-u10 from KitKat b330 to jb b146. This build has some problem like it didn't activate custom version. I decided to go back to original build 135. But during install it will give an error "oemsbl version list check error".

I extract current installed update file and one of the line in oemsbl list file was b135.

I tried to install from fast boot and adb it didn't worked.

I decide to use sp flash tool and it need scatter file and I don't have and there is nowhere I can find it. I tried to use android droid tools but it can't generate scatter file I think because phone is not rooted.

I tried every tools I know to root device but didn't work too.
I tried to unlock bootloader too. I think is nessesarry for rooting but can't get unlock code.

Is there any way to forcely install b135 or b330?
Or is there any way I can get scatter file for sp flash?
Or is there any way to root o.s. ?
Or is there any way to skip oemsbl version list check during install?
Or is there any way to get unlock code.

 

[czkey]

Huawei device was read and flash firmware completely from /sdcard/dload folder ever.
I don't know this works still now, but why don't you try this?

 

[Sagar Singh Khalsa]

Downgrade from emui 3.0 to emui lite 2.0 in huawei g6

Friends can you help me in downgrading my huawei g6 to original os emui lite 2.0.
I upgarded to emui 3.0 but I dont know how to downgrade.
Please help.

 

[HandyAIA]

Huawei device was read and flash firmware completely from /sdcard/dload folder ever.
I don't know this works still now, but why don't you try this?

I said I tried that it shows an error
Oemsbl version check error.
I passed that . successfully rooted phone and installed cwm recovery
But now I can't flash custom rom it giva an error again