Hi there, 

For GTi14, there are two version of BIOS, so be careful when you download the BIOS files. The two versions cannot be mixed or misused.
The first version is From Version T100 to T105, namely you can ONLY update from T100 to T105 or downgrade from T105 to T100.
The second version is from Version T106 to T201, namely you can ONLY update from T106 to T201 or downgrade from T201 to T106.

Before you flash the BIOS, please contact our support at support-pc@bee-link.com , 
make sure that the BIOS file is correct for your item model, otherwise , it will brick your PC.