# Sparrow Reference Board Reprogram Error
**URL:** https://discuss.blues.com/t/sparrow-reference-board-reprogram-error/1074
**Category:** Uncategorized
**Created:** [November 8, 2022, 6:06am UTC](https://discuss.blues.com/t/sparrow-reference-board-reprogram-error/1074 "2022-11-08T06:06:10Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@SDFlood](https://discuss.blues.com/u/SDFlood)
#### Post date: [November 8, 2022, 6:06am UTC](https://discuss.blues.com/t/sparrow-reference-board-reprogram-error/1074/1 "2022-11-08T06:06:10Z")
I am just starting to try and reprogram the 2 example sensor boards that come with the Sparrow Dev Kit. However, when flashing my code to the boards using the STM IDE I am receiving this error:
Are there any ideas as to why the board would not be detected? The other boards that were not the example sensors work fine.
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### Author:  [@zfields](https://discuss.blues.com/u/zfields)
#### Post date: [November 8, 2022, 11:56am UTC](https://discuss.blues.com/t/sparrow-reference-board-reprogram-error/1074/2 "2022-11-08T11:56:51Z")
Hello @SDFlood, welcome to the Blues family!
For me to really help, it is important to see the error message in full, but I’ll try to make a SWAG based on what I see there.
Perhaps you didn’t put AAA batteries in the sensors before you tried to flash the sensors?
The ST-LINK does not provide power, it only communicates. I’m guessing when you were flashing the other boards (e.g. Gateway) they were connected the Notecarrier-A, which happens to provide power to it.
Again, this is all a guess, until I can see the full output from the attempt to flash.
Glad to have you,
Zak