Please tell me where I can find the BLE direct test mode firmware for ESP32

I have also got corrupted jpeg for ov2640 camera. Can anyone help in this issue? Attached is the corrupted jpeg

We have a project that requires uploading more than 1200 photos stored at SD card from ESP32 to IOS app at fastest way. Please recommend a fastest way to send files from ESP32 to IOS app.
For example, can we use wifi-direct or espnow

My application use ESP32-WROOM-32D wifi module and implement mqtt function. Please tell me how to disable Nagle algorithm (tcp no delay) for MQTT communication. The SDK I used is esp-idf-v3.2

I want to use the code in softap_prov example to provision the ESP32-WROOM-32D module. Our customer need to develop the mobile app to provision the wifi module. Please send me the related document describing the provision communication protocol (message transfer between ESP23 module and mobile app) ...

I have follow the ducument to enable ESP32-WROOM-32D secure boot and flash encryption Follwoing error message occurs during first boot ets Jun 8 2016 00:22:57 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,...

My project use ESP32-WROOM-32D. The deep sleep current is 1.4mA current. It is too large. Please help. Code is attached

I also has this problem. Please help in this issue as soon as possible

I integrate the OTA function to my firmware and following error occur during compilation. Please help
media/sf_ESP32/esp/simple_wifi/build/main/libmain.a(simple_wifi.o):(.literal.UserOTA+0xc): undefined reference to `_binary_ca_cert_pem_start'

I am using esp-idf-v3.1 but still get this error. Please help