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The following recovery modes are available, depending on the state of the SW1UI4 when power is applied.
• 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.
• 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.
• if FWR_RCVR is low (button FW is not pressed),
RCVR_MODE is “don’t care” and the system boots normally.
This information will be in the new documentation planned to be released soon.
Hey there! I have a corrupted Linux on my board too... And it doesn't show up as a folder in My Computer :-( I posted a discussion too -https://communities.intel.com/mobile/mobile-access.jspa#jive-content?inbox=false&content=%2Fapi%2Fcore%2Fv3%2Fcontents%2F322053&mentionType=none&inboxId=2-276189&fromStream=true
How exactly do I use the recovery buttons? Could someone give a step by step explanation? I'm an absolute noob... Should I be using RM button? How to power off the Edison externally? Any help is appreciated :-)
This question is already marked as correct answer, and it seems you already have a suggestion in https://communities.intel.com/message/276278#276278 . We will continue with support there. Also, take a look at this document https://communities.intel.com/docs/DOC-23454 which discusses the buttons on the Arduino expansion board and gives information on the recovery mode of the Edison.
Could anybody, please, explain what is UMIP and UMIP header is? Is it a part of DFU (Device Firmware Upgrade) protocol?
As I can see for general flashing the whole system including kernel, u-boot and rootfs u-boot's dfu implementation is used.
As I understand recovery mode is a fallback case when u-boot's dfu is not avaliable.
If I want to use this described recovery mode - where I should send/write this UMIP header?
> the processor attempts to load the firmware from flash from the location specified in the UMIP header.
From what flash? eMMC? uSD?
Assume from eMMC recovery partition?
> the processor attempts to download from USB-B port,
Via dfu protocol?