Dragon Board stuck at Qualcomm DL Mode (No more fastboot/adb mode)


#1

I have tried to change the android system-partition size to 5GB from 1.2GB and reduced data-parition from 5GB to 1.2GB, so rebuild aosp with modified BoardConfig.mk

Then came to know that same has to be updated in gpt_both0.bin and successfully created same with modified partition info(removed few partition) for android and flashed the new gpt_both0.bin

fastboot flash partition gpt_both0.bin

Once I have rebooted the device, dragonboard is not detected by either fastboot/adb utility. So listed the usbdevices using lsusb command.
Dragonboard detected as
Bus 002 Device 119: ID 05c6:9008 Qualcomm, Inc. Gobi Wireless Modem (QDL mode)
instead of
Bus 002 Device 108: ID 18d1:d00d Google Inc.

After googling that came to know about qualcomm download mode. so please guide me to put my dragonboard back to normal mode.


#2

Hi,

It sounds like your updated gpt table is broken (in some way) which makes the board unable to load one of the boot loader steps from flash. There are a number of partitions that has to be intact for the board to begin booting Linux.

You should be able to restore you device by following the SD-card based installation instructions found at: https://github.com/96boards/documentation/wiki/Dragonboard-410c-Installation-Guide-for-Linux-and-Android

Regards,
Bjorn


#3

Hi Bjorn

Thanks for supporting me to resolve this issue. Dragonboard recovered from the mentioned state.

Regards,
Gopi