Incorrect firmware size

[Gopijackson]

Incorrect firmware size

[vovagorodok]

Are you using latest ArduinoBleOTA version?
What size of bin file is?
Upload by python script or mobile application?
if python script, can you show me console logs?

[Gopijackson]

*ArduinoBleOTA version - v1
*bin file size - 487,696 bytes

• python script

*OTA Device Found!
Connecting to ArduinoBleOTA
HW: Example ESP32, VER: [1, 0, 0], SW: Example SW, VER: [1, 0, 0]
Begin upload: attr size: 128, buffer size: 5080
Uploaded: 127/487696
:
Uploaded: 487696/487696
Incorrect firmware size

i print in serial monitor
487442 != 487696 (current len != Firmware len)

[vovagorodok]

Thanks
From logs I see that you have outdated version. Please type git pull, will be easier work in same code base.
From bin size I see that default ArduinoBLE library is used.
Issue happens because of internal buffer to big and ESP32 wasn't able to handle fast incoming packages:
https://github.com/vovagorodok/ArduinoBleOTA/blob/main/doc/ADVANCED.md
I have tested mostly on NimBLE-Arduino library. Perhaps for ArduinoBLE library buffer size should be tuned better here:
https://github.com/vovagorodok/ArduinoBleOTA/blob/main/src/BleOtaSizes.h
I have decreased buffer for ArduinoBLE: a808aea. Please check if it helps

You can run uploader.py second time. ArduinoBleOTA disables buffer when first upload fails. It should upload successfully but slowly.

You can disable buffer at all by:

build_flags =
	-D BLE_OTA_NO_BUFFER

But for NimBLE-Arduino speed decreases from 12kB/s to 3kB/s.
For ArduinoBLE from 20kB/s to 3kB/s.

[Gopijackson]

I am trying but can't solve this problem

incorrect firmware size

Connecting to ArduinoBleOTA
HW: Example ESP32, VER:[1, 0, 0], SW: Example SW, VER:[1, 0, 0]
Begin upload: attr size: 256, buffer size:1020
org.bluez.Error.Failed: Failed to initiate write

[vovagorodok]

attr size: 256 for ArduinoBLE is to big.That why you can't write to this characteristic.
Fix is on never version of ArduinoBleOTA, please:

git reset --hard
git pull

Add your blinking example main.ino and check if it works

[Gopijackson]

espdev i tried this
attr size : 16
buffer size : 512 perfectly flashed.But, very slow.
Then i tried this esp32dev_nimble, its perfectly flashed and time also ok.

Thank you for replying.