Flashing just the kernel

leung先森

yes, just flash the block of the kernel part.
http://en.t-firefly.com/doc/product/info/id/263.html#upgrade_tool

leung先森

maarten Posted at 2/14/2018 07:36
I have tried out the November image. Generally it works well (haven't tried out earlier images, so I ...

no sound from hdmi and earphone ?

leung先森

maarten Posted at 2/26/2018 04:20
did not list any soundcards, so no, no hdmi and no earphone.

1. root@firefly:~# aplay -l
   
2. **** List of PLAYBACK Hardware Devices ****
   
3. card 0: rockchiprt5640c [rockchip,rt5640-codec], device 0: ff890000.i2s-rt5640-aif1 rt5640-aif1-0 []
   
4.   Subdevices: 1/1
   
5.   Subdevice #0: subdevice #0
   
6. card 1: HDMICODEC [HDMI-CODEC], device 0: ff8a0000.i2s-i2s-hifi i2s-hifi-0 []
   
7.   Subdevices: 1/1
   
8.   Subdevice #0: subdevice #0
   

Copy the code

I have no idea what s going on your board ,  try the newest firmware.