Bootloader compatibility in ESP-IDF v5.0

[kneko715]

HI,

I use ESP32S3-wroom-1 (N8R2) and current firmware is build with ESP-IDF v4.4.4.
We now plan to update to firmware build with ESP-IDF v5.0.
So, ESP32S3 works with v4.4.4 bootloder and v5.0 application.

In this case, esp_restart() does not work. It hangups in restart sequence.
And WDT and panic handler are also hangup and never startup without H/W reset.

On the other hand, v5.0 bootloader and v5.0 application combination works fine.

Following document says "bootloader supports newer versions of ESP-IDF".
https://docs.espressif.com/projects/esp ... oader.html

Doesn't the v5.0 bootloader support v4 application?

thank you

[kneko715]

I found that this issue is occured when with following sdkconfig.

CONFIG_SPIRAM =y
CONFIG_ESPTOOLPY_FLASHFREQ_120M=y
CONFIG_SPIRAM_SPEED_120M=y