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Remove sub-GHz region/frequency TX limits (research build)

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Patch furi_hal_region.c so furi_hal_region_is_frequency_allowed and
furi_hal_region_is_provisioned always return true, allowing transmit on any
frequency the CC1101 can tune regardless of provisioned region. The hardware
PLL bands (~300-348 / 387-464 / 779-928 MHz) remain since they are physical.
Guarded by SUBGHZ_UNLOCK (default 1); build SUBGHZ_UNLOCK=0 to keep limits.
README documents that transmitting outside your local allocation may be
illegal and this is for research/authorised testing only.
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andy
2026-07-24 01:00:22 +01:00
parent 1160f568d5
commit 2f413fea03
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README.md
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@@ -230,6 +230,20 @@ firmware's peripheral connections by the role field. Advertising reports are
parsed from the raw HCI payload (the ST header's `Advertising_Report_t` is not a
wire overlay).
## Sub-GHz region unlock (research)
`build.sh` also patches the firmware's sub-GHz region gate so transmit is
allowed on any frequency the CC1101 can tune, regardless of the device's
provisioned region: `furi_hal_region_is_frequency_allowed` and
`furi_hal_region_is_provisioned` are forced true. This is what most "unlocked"
Flipper firmwares do. The CC1101 PLL bands (about 300-348, 387-464 and
779-928 MHz) remain, because they are a hardware limit, not a regulatory one.
**Transmitting outside the frequencies and power levels allocated to you may be
illegal in your country. This is provided for research and authorised testing
only; you are responsible for operating within the law.** Build with
`SUBGHZ_UNLOCK=0 ./build.sh` to leave the region limits in place.
## Limitations
* **BLE only.** The STM32WB55 has no Bluetooth Classic (BR/EDR), so classic