Once I have ABS_DONE_0 = 0 , I can start again. I can choice Reflashable bootloader option. but secure boot key I generated using esptool. Can I generate key using esptool which works with Reflashable bootloader not on-time Bootloader.ESP_Angus wrote: ↑Wed Nov 28, 2018 12:00 amWhat is the value of the ABS_DONE_0 efuse, as shown in "espefuse.py -p PORT summary"? If it's still 0 then you can start again from the beginning and follow the steps in the IDF Programming Guide for Secure Boot.
If ABS_DONE_0 has value 1 then secure boot has been enabled during a previous boot. You can still reflash the bootloader only if you used the "Reflashable" process to pre-burn the secure boot key ("espefuse.py burn_key SECURE_BOOT keyfile.bin"). In this case, you flash the bootloader+digest combination .bin file at offset 0x0 (if flashing only the bootloader, it flashes at offset 0x1000).
Is there option when generate key using esptool for Reflashable bootloader