We were worried there, for a minute. After code explorers found that Amazon's Kindle Fire HD 7-inch had both a locked bootloader and extra security measures, there was a brief concern that the pseudo-Android tablet might be very tough to hack. As it turns out, there was no reason to lose faith. Hashcode, Justin Case, Reverend Kyle and Sparklym3 from the XDA and RootzWiki forums have successfully rooted the smaller Kindle Fire HD in a repeatable form, giving anyone courageous enough to load ADB the control they want over the tab