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The European Union launched a free correction service called [High Accuracy Service](https://www.gsc-europa.eu/galileo/services/galileo-high-accuracy-service-has) or **HAS** starting in 2023. The service is delivered over the E6 frequency. In general, this service will greatly improve accuracy to receivers but is lower accuracy than an OSR or SSR-based RTK Fix. Additionally, a receiver can take up to 5 minutes to benefit from these corrections (convergence time is larger), as opposed to OSR (seconds) or SSR (~180 seconds) to achieve maximum accuracy. But HAS is free! And available with very little additional configuration.
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The RTK EVK has built-in cellular via a u-blox LARA-R6001D. However, the RTK Everywhere firmware does not yet support cellular. Adding it is on our roadmap. Stay tuned for updates! Meanwhile, we do have a stand-alone EVK code example which will connect to PointPerfect localized distribution via cellular:
Copy file name to clipboardExpand all lines: docs/firmware_update.md
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@@ -99,7 +99,7 @@ If your RTK 'freezes' after the update, press ```Reset ESP32``` to get it going
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## Updating Firmware From the SD Card
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On devices that support it, the firmware can be loaded from an SD card.
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## Updating u-blox Firmware
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The following products contain the following u-blox receivers:
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## Updating UM980 Firmware
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1. Download the latest UM980 firmware. As of writing, the UM980 firmware is [v11833](https://raw.githubusercontent.com/sparkfun/SparkFun_RTK_Torch/main/UM980_Firmware/UM980_R4.10Build11833.pkg). See the [RTK Torch repo](https://github.com/sparkfun/SparkFun_RTK_Torch) for the latest firmware.
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2. Download and install [UPrecise](https://raw.githubusercontent.com/sparkfun/SparkFun_RTK_Torch/main/UM980_Firmware/uprecise-v2-0.exe). UPrecise is the software created by Unicore to configure and view output from Unicore GNSS modules. v2 of the software can be downloaded [here](https://raw.githubusercontent.com/sparkfun/SparkFun_RTK_Torch/main/UM980_Firmware/uprecise-v2-0.exe) but newer versions may be available.
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2. Install the ESP32 core for Arduino:
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arduino-cli core install esp32:esp32@2.0.11
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arduino-cli core install esp32:esp32@3.0.1
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**Note**: Use v2.0.11 of the core.
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**Note**: Use v3.0.1 of the core.
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**Note:** We use the 'ESP32 Dev Module' for pin numbering.
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5. Add *RTKEverywhere.csv* partition table to the Arduino partitions folder. It should look something like
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**Note:** Not all devices support external SD (ie, RTK Torch). This section applies only to devices that support an external SD card, and have one inserted.
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The RTK product line is fully open-source hardware. This allows users to view schematics, code, and repair manuals. This section documents how to safely disassemble the RTK Facet and Torch.
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