Download Android KitKat 4.4.2 stock firmware for Eken GT90H tablet from here or here. Download previous firmware from here.
Firmware details
Archive: HP_A23_599x_4.4_GT90h_800x480_auto_gc0308_gc0308_20150401
Image: HP_A23_599x_4.4_GT90h_800x480_auto_gc0308_gc0308_
20150401.img
Archive size: 261 MB
Support: Allwinner A23
FW version: 4.4v2.0
Style: GT90H
Company: Allwinner-Tablet
Pixels: 1024 X 600
Build number: polaris_p1-eng 4.4.2 KVT49L 20150401 test-keys
Caution: Please do not update firmware unless you know what you are doing, you really want it or it is absolutely necessary. Firmware updates may occasionally have bad results, like bricking your device, temporarily or permanently. The firmware update process is done entirely at your own risk. Before attempting to update the firmware, back up your data.
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