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Mcu T5.3.19 «2027»

Staying on T5.3.19 will ensure a smooth migration path to these future versions via in-place OTA.

The of your head unit (e.g., PC78TGV, IA series).

update can sometimes break hardware functions like Bluetooth or physical buttons. mcu t5.3.19

esptool.py --chip esp32t5 --port COM5 write_flash 0x1000 mcu_t5.3.19.bin

Subject: Help/Firmware Request: Allwinner T3 Head Unit - MCU T5.3.19 Hi everyone, Staying on T5

| Firmware Version | CoreMark Score | Power (mA @ 100 MHz) | Boot Time (ms) | |----------------|----------------|----------------------|----------------| | T5.2.0 | 312.4 | 28.2 | 210 | | T5.3.15 | 358.1 | 26.9 | 195 | | | 372.6 | 24.1 | 178 |

AT+VER?

Most T5-based MCUs use a dual-bank bootloader. Hold the pin high and reset the device. You should see: