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Help need with dumping firmware on Allwinner based device using FEL or serial console


_hex_

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I have IQAir AirVision pro and i'm try to reverse engineer it

it uses uboot sunxi (allwinner)

 

was following this video

according to video i need to know where flash chip is mapped in to memory then use md print whole firmware then used https://github.com/nmatt0/firmwaretools/blob/master/parse-uboot-dump.py to convert to firmware as he used bdinfo to get address (which is not present), what i do?

 

Is there any way through which i can extract frimware from device? (like using FEL Mode)

 

also

found https://github.com/zador-blood-stained/h3-fel-mass-storage

is it possible do same on Allwinner A33

 

logs

https://xdaforums.com/attachments/boot-txt.6083991/

https://xdaforums.com/attachments/depthcharge-print_all-txt.6084119/

https://xdaforums.com/attachments/uboot_sunxi_printenv-txt.6083992/

https://xdaforums.com/attachments/uboot_more-info-txt.6084356/

 

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