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How to recover Edison firmware

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Is there a way to recover Edison root password?

 

Also I've also tried to replicate the firmware recovery instruction below but to no avail.

-How do I monitor if Edison has entered into the firmware recovery mode? ("screen /dev/cu.usbserialxxxx 115200 -L" ?)

-Where's the UMIP header?

-How to "send new image over USB"

 

From the document "Intel Edison Kit for Arduino":

SW1UI3 and SW1UI4 are used to recover an Edison that has a corrupted software image. Powering off Edison and

then pressing FWR_RCVR and then applying power will cause Edison to go to firmware recovery mode. Edison will

be ready to receive a new image over USB. Two recovery modes are available depending on the state of the

SW1UI4 when power is applied.

During boot, If FWR_RCVR is high (button FW pressed), the processor attempts to load the firmware from flash

from the location specified in the UMIP header. During boot, if FWR_RCVR is high (button FW pressed) and

RCVR_MODE is low (button RM pressed), the processor attempts to download from USB-B port, regardless of the

UMIP header.

 

thank you in advance


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