What I’m facing now is when I change something on uboot - on sd or emc the 
beagle is not booting -the board is not booting - the power led is on but all 
the rest is off - and there is nothing on hdmi or serial console .
I have to restore the flash or undo the changes on sdcard.
For instance I update the kernel and after a reboot the leds is all off.


Sent from my iPhone


> Em 31 de dez. de 2020, à(s) 03:12, 张大嘴 <[email protected]> escreveu:
> 
> 
> Resolved. With the R689 resistor removed, I can boot from eMMC when inserting 
> an SD card. 
> 在2020年12月29日星期二 UTC+8 下午10:18:53<张大嘴> 写道:
>> I need to put the program on the eMMC and use an SD card to store the data. 
>> But when I insert an empty SD card, the board card cannot boot the system 
>> from eMMC
> 
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