Download Android KitKat 4.4.2 Stock Firmware for Onda 989 Air tablet from here or here. Download previous firmware from here.
Firmware details
Update file name: 989 Air Core8 v2.0.1_v5
Image: 989 Air Core8 v2.0.1_v5.img
Archive size: 493 MB
Model: Onda 989 Air tablet
Model: Onda 989 Air tablet
Platform: Allwinner A80T
FW version: v2.0.1_v5
Style: V989 Air Core8
FW version: v2.0.1_v5
Style: V989 Air Core8
Company: ONDA
Pixels: 1536 x 2048
Build number: octopus_chiphd-eng 4.4.4 KTU84Q 20160118 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.
Pixels: 1536 x 2048
Build number: octopus_chiphd-eng 4.4.4 KTU84Q 20160118 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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