Hello to all the community. I posted this problem in another thread but I have more doubts about the recovery of this tablet. The initial problem is that with root permissions I modify the permissions of the folder system without dismount the unit (I trying to change the permissions of a other folder), then the tablet screen froze and said nothing more. At restart COBY logo appears for about 10 seconds, disappears and reappears for another 10 seconds cyclically. I access the menu of recovery (vol-and power button pressed together), and use the "wipe / factory reset" unable to retrieve the tablet (this format cache and data but anyway). At all this I send 7 mails requesting support form coby and the firmware, detailing what happened to me, but I only answered the second mail with the method of the factory reset, not responded the five mail following. By accessing recovery mode I try to connecting via ADB but the tablet answer "0123456789ABCDEF offline" obviously unable to start android I can not activate the debugging mode. I explained my problem, queries are: Pressing together vol+ and vol- and power button, Window$ detects a drive with 512 MB free VDFU, who that is this unit?. Fastboot mode exists in this tablet?, As active if any? Anyone have the original firmware with a detailed explanation of how to install it? I Appreciate it if they did. Honestly I am very interested to recovery my tablet, where I live this tablet costs $1000 and the average monthly salary of an employee is about $4000, is that it is not interested COBY, (for this not have responded). Also inside in this tablet reside files very importants for me, but I resigne lose this files if recovery my tablet. Also tell them that I have experience in linux and I own a workshop of industrial electronic services. I hope can help me and remember that, with ADB commands always respond with offline, fastboot I can't run, the wipe and tried them all. Thanks Greetings! P.D.: My english is very basic i'm sorry, please patience.