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issues with bootloader sync #1

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@Tamas-Biro1

hi,

first of all, thanks for reviving ESPTool C# project.

I'm trying ESPFlasher with different kind of ESP32 device, but could not get it work. For example, ESP32-S3 (with chip model 0x9) should work if i change the code (at least bootloader sync or erase) but always got:

2024. 10. 13. 20:18:54 [Information] ESP_Flasher.Services.DeviceService: Initializing device on COM7
2024. 10. 13. 20:18:54 [Information] ESPTool.Devices.DeviceManager: Opened serial port COM7
2024. 10. 13. 20:18:54 [Information] ESPTool.Devices.DeviceManager: Execute bootloader sequence...
2024. 10. 13. 20:18:54 [Information] ESPTool.Devices.DeviceManager: Syncing with bootloader...
2024. 10. 13. 20:18:54 [Information] ESPTool.Devices.DeviceManager: Attempting to sync with bootloader (Attempt 1)...
2024. 10. 13. 20:18:55 [Warning] ESPTool.Devices.DeviceManager: Sync attempt 1 timed out.
2024. 10. 13. 20:18:55 [Information] ESPTool.Devices.DeviceManager: Attempting to sync with bootloader (Attempt 2)...
2024. 10. 13. 20:18:56 [Warning] ESPTool.Devices.DeviceManager: Sync attempt 2 timed out.
2024. 10. 13. 20:18:56 [Information] ESPTool.Devices.DeviceManager: Attempting to sync with bootloader (Attempt 3)...
2024. 10. 13. 20:18:56 [Error] ESPTool.Devices.DeviceManager: Error occurred during bootloader sync on attempt 3. Exception: Failed to send or receive frame.
2024. 10. 13. 20:18:56 [Error] ESP_Flasher.Form1: Failed to erase flash Exception: Failed to send or receive frame.

with another device, erase just hangs with Attempt 1. My guess is that for some reason these chips could not go into bootloader with the specified sequence. Could you tell me what is your ESP32 device model that worked for you?

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