Yesterday, from nothing, my mi box s updated (alone) the 8.1 android tv., Today i just put to update to android tv 9 and everything its working again, wifi and bluetooth up and running. Thanks guys.
Hi Claymic
Can you tell me how you recovered your Mi Box S, Im having the exact same issues you described, and I'm wondering how you fixed yours.
I'm using the Amlogic USB Burning Tool v2.2.0, I downloaded the following three files from page 1 of the post you left your last comments on.
Installed the r363 image file with the above tool - no problems (except WiFi and Bluetooth as you described), next used a USB keyboard (with USB HUB) to bypass remote pairing wizard, switch on CEC control, then enable Developer mode and USB debugging. The connect to a pc and use "ADB reboot recovery" to get into recovery mode, as you mention had to unplug the pc ADB link USB and reconnect my USB hub with keyboard and USB flash drive containing the "update.zip" r699 file also downloaded from the list. Wiped the cache & data/factory reset within the recovery menu before installing the update, again this installs and updates, comes back to the recovery menu where I reboot to the r699 update, but still no WiFi or Bluetooth, again repeat this process and try to update to the latest version r3933, this difference being this time once the device begins to install the update.zip file it automatically jumps to the boot loader "MI" screen, then as you described the screen just goes black and does not install any further. I've also tried loading the initial android 9 beta ota0 file and this initial android 9 release file instead of the latest, but none seem to work.
I'd be greatful if you could run through the steps you took in sequence to get yours to recover with working WiFi and Bluetooth.