Can I un-brick my dev board after unknowingly uploading alternate app when secure boot was enabled
Posted: Tue Mar 08, 2022 7:58 am
I was testing out secureboot on a dev board, then by mistake I uploaded another app onto the device (I forgot secure boot was enabled, reflashable option). Not I can upload apps onto my device but get
Any possibility to unbrick my device or do I consider this board gone 
Also I would be nice if there was a way to test secureboot without writing to the ABS_DONE_0 fuse or if ABS_DONE_0 was rewritable like the FLASH_CRYPT_CNT fuse.
Related issue: https://github.com/espressif/esptool/issues/699
Code: Select all
rst:0x1 (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:2
load:0x3fff0030,len:7576
load:0x40078000,len:19720
load:0x40080400,len:3820
0x40080400: _init at ??:?
secure boot check fail
ets_main.c 371
ets Jun 8 2016 00:22:57
Also I would be nice if there was a way to test secureboot without writing to the ABS_DONE_0 fuse or if ABS_DONE_0 was rewritable like the FLASH_CRYPT_CNT fuse.
Related issue: https://github.com/espressif/esptool/issues/699