There is 2 problems you have: - like @ESP_Sprite mentioned, FAT root folder has limited number of entries (folders and files), - this is bigger problem: each single file is using at least 1 cluster and if cluster size is 4096 bytes, then you are limited to about 256 files on 1MB partition; since you...

https://github.com/espressif/esptool/wiki/ESP32-Boot-Mode-Selection#boot-mode-message In that case you may have hardware issue, because from logs, like @lbernstone said, you have 5 bootstrap pins high including GPIO2. GPIO2 must also be either left unconnected/floating, or driven Low, in order to en...

In that case maybe try to find when it is happening and try to add small delay before bt command that is causing it.

Of course i am assuming you are getting this error:

sdkconfig is not something you are updating with OTA. With OTA you can update firmware/app and eventually bootloader (not recommended), but changes you will do in sdkconfig will affect how firmware/app, not all changes thou.

Did you try to increase timer task stack in menuconfig?

Just idea, are you sure that display_task_create(); task does not exit?
I see you are using esp-idf v3.3 and im not 100% sure that exiting task will display proper error message.

Here you have few example HID reports you can use just like in example:
https://github.com/hathach/tinyusb/blob ... #L116-L304

If you dont find report map that suits you then you can try to build your own or wait when espressif will finish common HID API for ble and USB.

W (32936) BT_APPL: bta_gattc_conn_cback() - cif=1 connected=0 conn_id=1 reason=0x0013 0x13 Remote User Terminated Connection This 30 seconds may be related to secure connection. It is time you have to send pin code or to confirm that pin codes are matching. If peer device requires secure connection...