First thank with all answer the thread
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OK. I've buy G4 Refurbished from Aliexpress with Model H811 T-Mobile (On the box and back cover) OS: Android 5.1 (H811-10n)
I've upgrading to Android 6.0 (H811-20i) and BOOM!!. That's BRICKED, No Power, No D/L MODE, No Recovery and appear on device...