[Q] How to enter download mode kitkat devices topic

Hi, I am trying to get HDD raw from my device, which can recover another device(hardbrick)
I followed many way from xda and googel(also install advance power menu). but I cannot get it into download mode.(I can enter tahe fastboot and adb, I have android sdk, cygin, qpst) Pls someone kindly help me. I am ready to upload any information or part of rom, ext..
I using haier ad6b1h(qualcomm 8610)



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