# Device reverts to previously flashed code
**URL:** https://community.particle.io/t/device-reverts-to-previously-flashed-code/55341
**Category:** Firmware
**Tags:** photon
**Created:** [March 26, 2020, 12:00am UTC](https://community.particle.io/t/device-reverts-to-previously-flashed-code/55341 "2020-03-26T00:00:49Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@anpl0907](https://community.particle.io/u/anpl0907)
#### Post date: [March 26, 2020, 12:00am UTC](https://community.particle.io/t/device-reverts-to-previously-flashed-code/55341/1 "2020-03-26T00:00:49Z")
Hi,
I am starting on a new project where my device reads data from a couple sensors. My code filters the data and prints data in the terminal. I am using a photon from a previous project. My issue occurs when I flash new code to my device from safe mode or any mode for that matter. The photon works as expected and then after about 20-30seconds, the LED turns red then white and then starts running the code from the previous project.
I have tried updating device firmware and resetting the device.
I don’t think that I have to update anything in the web IDE right?
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### Author:  [@ScruffR](https://community.particle.io/u/ScruffR)
#### Post date: [March 26, 2020, 7:25am UTC](https://community.particle.io/t/device-reverts-to-previously-flashed-code/55341/2 "2020-03-26T07:25:53Z")
> [@anpl0907](#):
>
> I am using a photon from a previous project.
Has that Photon been assigned to a _product_ (using `PRODUCT_ID()` in code or assigned via the console)?
That would cause the behaviour you are seeing.
You need to release the device from the product.
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### Author:  [@anpl0907](https://community.particle.io/u/anpl0907)
#### Post date: [March 26, 2020, 2:31pm UTC](https://community.particle.io/t/device-reverts-to-previously-flashed-code/55341/3 "2020-03-26T14:31:39Z")
Ok! I’ll give that a go and let you know how it goes.
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### Author:  [@anpl0907](https://community.particle.io/u/anpl0907)
#### Post date: [March 30, 2020, 8:09pm UTC](https://community.particle.io/t/device-reverts-to-previously-flashed-code/55341/4 "2020-03-30T20:09:16Z")
@ScruffR Yes that solved the issue.Thanks!
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### Author:  [@system](https://community.particle.io/u/system)
#### Post date: [September 29, 2020, 8:09am UTC](https://community.particle.io/t/device-reverts-to-previously-flashed-code/55341/5 "2020-09-29T08:09:17Z")
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