Greetings!!!
Hello there pros.you know who you are.

.i had this china mp4 player own by my friend an ipod nano like and has 1.8 screen.it has a B809 board id and a ATJ2093H RAM.it got white screen and computer doesn't detect it anymore after for a month of use before it was purchased.the problem is that i have already performed then dead recovery guide many times like shorting the pins stuff like that but still i cant get the computer detect it into adfu mode.nothings pops up on the computer.i have done the short circuiting many times but still i cant get it make detected.what seems to be the problem with that?any advice?is the flash chip permanently damage?one more thing..before it had a white screen right after my friend charge the mp4.
Hope i can hear from you soon.TNX!!