# Ruuvi Firmware doesn't work after reprogramming

**URL:** https://f.ruuvi.com/t/ruuvi-firmware-doesnt-work-after-reprogramming/3305
**Category:** 🇬🇧 Ruuvi firmware development
**Created:** [21 February 2019 13:24 UTC](https://f.ruuvi.com/t/ruuvi-firmware-doesnt-work-after-reprogramming/3305 "2019-02-21T13:24:33Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![Boris](https://f.ruuvi.com/letter_avatar_proxy/v4/letter/b/74df32/32.png) [@Boris](https://f.ruuvi.com/u/Boris)
#### Post date: [21 February 2019 13:24 UTC](https://f.ruuvi.com/t/ruuvi-firmware-doesnt-work-after-reprogramming/3305/1 "2019-02-21T13:24:33Z")

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Hi,

I programmed my ruuvi tag with my own software, but now I would like to return to the default ruuvi software. (So I can connect with bluetooth with my ruuvi tag).

I try to program the following firmware: [RuuviLab | Firmware Update](https://lab.ruuvi.com/dfu/)

I downloaded the segger tooling and use the SEGGER J-flash lite 5.10h tooling:

Everything seems oke, but the leds are not blinking after flashing:

 ![segger-lite](https://f.ruuvi.com/uploads/default/original/2X/d/d0c86559c6c36419e0d27fbd924a2d42580d1c1b.png)

Any tips to get this working?

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### Author: ![otso](https://f.ruuvi.com/user_avatar/f.ruuvi.com/otso/32/1651_2.png) [@otso](https://f.ruuvi.com/u/otso)
#### Post date: [27 February 2019 15:49 UTC](https://f.ruuvi.com/t/ruuvi-firmware-doesnt-work-after-reprogramming/3305/2 "2019-02-27T15:49:06Z")

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Hello and sorry about my delayed reply.

Please flash full hex found at [https://github.com/ruuvi/ruuvitag\_fw/releases/tag/1.3.6.1](https://github.com/ruuvi/ruuvitag_fw/releases/tag/1.3.6.1), tags ship with ruuvi\_firmware\_full\_1.2.12.hex