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Re: Backup firmware ?

PostPosted: Fri Nov 14, 2014 5:02 am
by picpic020960
nobody has this need ?

no tuto for beginner ?

I have two chips and do not want to break

thanks for help

Re: Backup firmware ?

PostPosted: Fri Nov 14, 2014 3:09 pm
by Sjaak
You can find some vids on yoiutube how to desolder a soic:




(I'm assuming you dont have an hotairstation)

After that you can use this programmer that can read the spi flash: http://autoelectric.cn/ or the flashrom utility with a buspirate or compatible adapter ( http://flashrom.org/Flashrom )

Re: Backup firmware ?

PostPosted: Wed Nov 04, 2015 4:38 pm
by nnico
esptool.py --port /dev/ttyUSB0 --baud 115200 read_flash 0x000 524288 backup.bin

Re: Backup firmware ?

PostPosted: Wed Nov 04, 2015 5:24 pm
by eduperez
When you upload a new firmware, you do not overwrite the bootloader; so there is no possibility of "bricking" an ESP device, as may happen with a mobile phone. In case you do not like the new firmware, you can just download a new AT firmware from the internet and upload it to the device.