AT Labs Release Mirror

AT Labs RM-2 Firmware

Clean release catalog for RM-2 firmware, with versioned MeshCore and Meshtastic downloads, checksums, and support files staged for fresh XIAO devices with the correct bootloader already installed.

RM-2 curated builds UF2 + HEX artifacts Generated 2026-04-20T17:14:28Z UTC
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MeshCore

Companion and repeater builds tuned for RM-2 hardware, including CASIC GPS handling, official USB setup compatibility, and AT Labs release tracking.

Release Notes
10 releases
Release Notes
MeshCore

AT Labs RM-2 MeshCore 1.15.0.AT.1 Repeater GPS Off

Variant: Repeater GPS Off
Install: fresh-hardware-ready (bootloader required)
Published: 2026-04-20 12:52:03 -04:00
UF2
ATLabs_RM2_MeshCore_1.15.0.AT.1_Repeater_GPS_Off.uf2
Version
1.15.0.AT.1
Download UF2 HEX Notes
SHA256: 87b083ef0bd7c4000b136dd0eaef70ed3a2203fc8eaa1629cb9ff989a8ebd046
MeshCore

AT Labs RM-2 MeshCore 1.15.0.AT.1 Repeater GPS On

Variant: Repeater GPS On
Install: fresh-hardware-ready (bootloader required)
Published: 2026-04-20 12:52:03 -04:00
UF2
ATLabs_RM2_MeshCore_1.15.0.AT.1_Repeater_GPS_On.uf2
Version
1.15.0.AT.1
Download UF2 HEX Notes
SHA256: 0cb607ccaa1cd1cb9d562b0d1aabecc98e348dd9364c9e72df4ca4f1d5809f64
MeshCore

AT Labs RM-2 MeshCore 1.15.0.AT.1 Companion Dual

Variant: Companion Dual
Install: fresh-hardware-ready (bootloader required)
Published: 2026-04-20 12:50:33 -04:00
UF2
ATLabs_RM2_MeshCore_1.15.0.AT.1_Companion_Dual.uf2
Version
1.15.0.AT.1
Download UF2 HEX Notes
SHA256: bfe29af3ac5f7b8a3d3f1a566b28213b3b50b27819bd170b50bf2d5efedf5817
MeshCore

AT Labs RM-2 MeshCore 1.15.0.AT.1 Companion USB

Variant: Companion USB
Install: fresh-hardware-ready (bootloader required)
Published: 2026-04-20 12:50:33 -04:00
UF2
ATLabs_RM2_MeshCore_1.15.0.AT.1_Companion_USB.uf2
Version
1.15.0.AT.1
Download UF2 HEX Notes
SHA256: 055512f27ce98a64a207cfd782671332e4884e69df6a1a7e5055579bfce6c05e
MeshCore

AT Labs RM-2 MeshCore 1.15.0.AT.1 Companion BLE

Variant: Companion BLE
Install: fresh-hardware-ready (bootloader required)
Published: 2026-04-20 12:50:32 -04:00
UF2
ATLabs_RM2_MeshCore_1.15.0.AT.1_Companion_BLE.uf2
Version
1.15.0.AT.1
Download UF2 HEX Notes
SHA256: d943ff5938280698a3433da6f009c087581a731e3179bc4c5bae9d510f9bd2c8
Previous releases 5 older releases
MeshCore

AT Labs RM-2 MeshCore 1.14.1.AT.3 Companion Dual

Variant: Companion Dual
Install: fresh-hardware-ready (bootloader required)
Published: 2026-04-15 14:28:06 -04:00
UF2
ATLabs_RM2_MeshCore_1.14.1.AT.3_Companion_Dual.uf2
Version
1.14.1.AT.3
Download UF2 HEX Notes
SHA256: e84482a910c258077d0850a67a36516b6caf602b44c218cc55513ba49e7137dd
MeshCore

AT Labs RM-2 MeshCore 1.14.1.AT.3 Companion USB

Variant: Companion USB
Install: fresh-hardware-ready (bootloader required)
Published: 2026-04-15 14:28:06 -04:00
UF2
ATLabs_RM2_MeshCore_1.14.1.AT.3_Companion_USB.uf2
Version
1.14.1.AT.3
Download UF2 HEX Notes
SHA256: b343a4a6f3dff1ba54d928fa298609cf2e42dba2c5e91b525c3cb676687e9d6a
MeshCore

AT Labs RM-2 MeshCore 1.14.1.AT.3 Companion BLE

Variant: Companion BLE
Install: fresh-hardware-ready (bootloader required)
Published: 2026-04-15 14:28:05 -04:00
UF2
ATLabs_RM2_MeshCore_1.14.1.AT.3_Companion_BLE.uf2
Version
1.14.1.AT.3
Download UF2 HEX Notes
SHA256: 9f0a14d3100f4b8063cef06426d9c3b227593488b6126205e3ec06f3bd61808e
MeshCore

AT Labs RM-2 MeshCore 1.14.1.AT.3 Repeater GPS On

Variant: Repeater GPS On
Install: fresh-hardware-ready (bootloader required)
Published: 2026-04-01 13:53:53 -04:00
UF2
ATLabs_RM2_MeshCore_1.14.1.AT.3_Repeater_GPS_On.uf2
Version
1.14.1.AT.3
Download UF2 HEX Notes
SHA256: 75158fd6d2ec3bbb6acb172c10c19be7850d59d61aaf88814343721e25165c8a
MeshCore

AT Labs RM-2 MeshCore 1.14.1.AT.3 Repeater GPS Off

Variant: Repeater GPS Off
Install: fresh-hardware-ready (bootloader required)
Published: 2026-04-01 13:53:51 -04:00
UF2
ATLabs_RM2_MeshCore_1.14.1.AT.3_Repeater_GPS_Off.uf2
Version
1.14.1.AT.3
Download UF2 HEX Notes
SHA256: f168b2110fcf0eb27bbab5632c2704cf28d569c9e434db9f40df8f12deecb7d8

Meshtastic

Pinned RM-2 Meshtastic baseline with the validated 8 dBm clamp and client-visible power reporting aligned to actual transmit behavior.

Release Notes
1 release
Release Notes
Meshtastic

AT Labs RM-2 Meshtastic v2.7.15_567b8ea_8dBm

Variant: Default
Install: fresh-hardware-ready (bootloader required)
Published: 2026-03-27 14:59:21 -04:00
UF2
ATLabs_RM2_Meshtastic_v2.7.15_567b8ea_8dBm.uf2
Version
v2.7.15_567b8ea_8dBm
Download UF2 HEX Notes
SHA256: c28e48e4053e546c3c896fe3f3b909331e8ad4f479e80b423e8800b16d3e51d4

Support Files

Recovery and rollback helpers that stay outside the main release stream but are useful during bring-up, rescue, or reference testing.

AT Labs RM-2 release mirror