I have a Telstra T-Tablet Huawei S7-104 with external SD . I wanted to update to 2.2 . I downloaded instructions from this site , and allwas going well.. First pass, white bar completed and said ok. Removed battery , replaced battery and powered up, white bar started to progress to about half way, then unit turned off, and will not show any signs of life. I have changed battery , but still will not start or eevn flicker. Totally dead. Has any one got any ideas? Many thanks