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QHSUSB_DLOAD - What is the protocol?

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Camicia
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Default QHSUSB_DLOAD - What is the protocol?

This is the mode that can be forced on start or the only one available if the boot loader is damaged.
It is supposed to give some diagnostic about what is wrong with the phone and let you flash the boot loader etc.
Does anybody know how it works and what tools to use? Has anybody reverse engineered the protocol?
 
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I suppose the internal documentation is in the Snapdragon data sheets available at https://support.cdmatech.com/ (see here: https://developer.qualcomm.com/forum...iscussion/6364 )
 
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This seems to be a the documentation of a diagnostic tool: http://mon-nuage.net/E330/C7QDLTool%...uide_1.002.pdf
On page 38 it talks about "Qualcomm HS-USB Diagnostic 900E" driver.
Is this a good place to start?

This also looks juicy: http://forum.xda-developers.com/show....php?t=2086142
 
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Thread closed as duplicate/triplicate/quadruplicate of QHSUSB_DLOAD - What is the protocol?. Please continue the discussion there.


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