By "official Espressif modules" I'm assuming (yes, dangerous) you mean the metal encapsulated WROOM / WROVER modules? I have both those and ones with a bare chip. The TTGO T7 has a bare ESP32 chip marked as ESP32-DOWDQ6 152020 UB00PRVH57 and the flash chip (not the PSRAM chip) is marked as: winbond ...

It appears that QIO was being treated as DIO in the ESP platform up until 3.3.0. After that it was interpreted as QIO which none of my boards can support - QOUT being the best they can do. So it's a bug fix causing regression errors in all of my code. I will have to now go back and set the Flash Mod...

I've posted a new bug report for this issue:
https://github.com/platformio/platform- ... issues/630

All my ESP32s have suddenly (within the last month) refused to work with flash set to qio mode. Setting these to dio solves the problem. But given that I have always used qio (standard according to Espressif) why the sudden change? I've had one particular ESP32 project (TTGO v1.7.1 4Mb PSRAM) runnin...