# 1.2.12

Ruuvi Firmware 1.2.12 was the first firmware to be continuously produced for RuuviTags shipped from Ruuvi Shop. The factory firmware was updated on 2019-12 and no new tags with this firmware is produced anymore, but you might still find the FW on some tags.

You can check the firmware version with a NFC read, if you have this firmware please update to 2.5.9 with instructions at lab.ruuvi.com/dfu.

| Feature                      | Status                                                                                                                                                                                        |
| ---------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **NFC**                      | Supported, NFC read may hang in rare cases and reboot is required.                                                                                                                            |
| Record 0: Text, "id"         | "ID: " + XX:XX:XX:XX:XX:XX:XX:XX representing tag ID, 8 bytes.                                                                                                                                |
| Record 1: Text, "ad"         | "MAC: " + XX:XX:XX:XX:XX:XX representing tag Bluetooth address, 6 bytes.                                                                                                                      |
| Record 2: Text, "sw"         | "SW: Ruuvi 1.2.12"                                                                                                                                                                            |
| Record 3: Text, "dt"         | "Data:"                                                                                                                                                                                       |
| **Bluetooth**                | Non-connectable, non-scannable advertisements are supported.                                                                                                                                  |
| URL advertising (format 4)   | Supported, 2 Hz advertising. Green led blinks.                                                                                                                                                |
| RAWv1 advertising (format 3) | Supported, 1 Hz advertising. Red led blinks.                                                                                                                                                  |
| **Button**                   | One software button + reset button supported.                                                                                                                                                 |
| "B" short press              | Chage between advertising mode 1, 2                                                                                                                                                           |
| "B" pressed on boot          | Enter bootloader                                                                                                                                                                              |
| "R" sort press               | Reboot                                                                                                                                                                                        |
| Hold down "B", press "R"     | Enter bootloader                                                                                                                                                                              |
| **Sensors**                  | **A**cceleration, **H**umidity, **T**emperature, **P**ressure, **V**oltage                                                                                                                    |
| BME280 (H, T, P)             | Supported, continuous mode, 1 Hz, 16x IIR low-pass filtering, \~60 seconds step response                                                                                                      |
| LIS2DH12 (A)                 | Supported, continuous mode, 1 Hz, no filtering, \~0.5 Hz bandwidth.                                                                                                                           |
| nRF52 (T, V)                 | Supported, measures temperature only if BME280 is not present on board. Battery voltage measurement is not synchronized to loading of device which may cause noisy readings or missed droops. |
| **Battery life**             |                                                                                                                                                                                               |
| URL mode                     | 2 years expected in room temperature                                                                                                                                                          |
| RAW mode                     | 3 years expected in room temperature                                                                                                                                                          |

![Firmware flowchart](https://1423309131-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-LsPjfnhNj3v37AZtF-d%2Fuploads%2Fgit-blob-ff8bd7cd3e1849e4257a24fdf53ba570c3612f23%2FRuuviFW%201-2.png?alt=media)