It's National Day of China. Crystal is on vacation. He will back after Saturday of this week. Do you have usb-ttl cable?
If not, please prepare one. You can refer to this manual to make it work again
www.openvox.cn/pub/misc/tools/Flash%20Vo...0USB-TTL%20cable.pdf
If you have troubles to do it by your own. You can prepare remote access, I can help you. For convenient contact, you can add my skype below.
best regards,
email: This email address is being protected from spambots. You need JavaScript enabled to view it.
skype: linda.li258