TL;DR

• Dolphin: new animation
• Build System: firmware origin and build system hooks, various improvements and fixes
• Storage: various improvements
• Desktop: subscription based locking RPC API, favorite app refactoring(allows to select app browser)
• Infrared: proper duty cycle handling, new AC signals, bug fixes and improvements
• BadUSB: fr-FR-mac layout, execution pause, bug fixes and improvements
• Nfc: MF Ultralight C support, Opal card decoder, various improvements and bug fixes
• NfcMagic: gen4 support
• RFID: Nexkey/Nexwatch protocol support, various improvements and bug fixes
• FuriHal: bus abstraction, handles IC peripherals clocking and state

Known Issues

• Periodic Core2 HardFauls in sleep mode, currently is being investigated by ST, waiting for their conclusion. Workaround: switch sleep mode to Legacy. Details on deep sleep can be found in our blog https://blog.flipperzero.one/1-month-battery-life-with-firmware-update/ Issues can be reported on our forum: https://forum.flipperzero.one/t/flipper-zero-low-power-mode/15494

What's Changed

• Add new indexer by @drunkbatya in https://github.com/flipperdevices/flipperzero-firmware/pull/2681
• Fix builds for old pythons by @xMasterX in https://github.com/flipperdevices/flipperzero-firmware/pull/2685
• fbt: Fix tar uid overflow when packaging by @GMMan in https://github.com/flipperdevices/flipperzero-firmware/pull/2689
• [FL-3328] Removed user-specific data from tar artifacts by @hedger in https://github.com/flipperdevices/flipperzero-firmware/pull/2691
• [FL-3327] Storage: common_rename is now POSIX compliant by @DrZlo13 in https://github.com/flipperdevices/flipperzero-firmware/pull/2693
• [FL-3309] Services: remove deallocator for persistent services by @skotopes in https://github.com/flipperdevices/flipperzero-firmware/pull/2692
• Storage, common_rename: check that old path is exists by @DrZlo13 in https://github.com/flipperdevices/flipperzero-firmware/pull/2698
• [FL-3315] Desktop,Rpc: desktop status subscription by @skotopes in https://github.com/flipperdevices/flipperzero-firmware/pull/2696
• :sparkles: Add fr-FR-mac key layout by @FelixLgr in https://github.com/flipperdevices/flipperzero-firmware/pull/2666
• [FL-3322] Infrared: respect carrier frequency and duty cycle settings by @gsurkov in https://github.com/flipperdevices/flipperzero-firmware/pull/2677
• USB HID report timeout by @nminaylov in https://github.com/flipperdevices/flipperzero-firmware/pull/2682
• Add Airwell Prime DCI Series and match file style by @minchogaydarov in https://github.com/flipperdevices/flipperzero-firmware/pull/2686
• desktop: Refactor favorites settings and allow app browser in selection by @GMMan in https://github.com/flipperdevices/flipperzero-firmware/pull/2687
• NFC: Add support for Gen4 "ultimate card" in Magic app by @nullableVoidPtr in https://github.com/flipperdevices/flipperzero-firmware/pull/2238
• nfc: Fix MFUL tearing flags read by @GMMan in https://github.com/flipperdevices/flipperzero-firmware/pull/2669
• api: added toolbox/api_lock.h by @hedger in https://github.com/flipperdevices/flipperzero-firmware/pull/2702
• Update ac.ir by @technobulb in https://github.com/flipperdevices/flipperzero-firmware/pull/2701
• nfc: Mifare Ultralight C detection by @GMMan in https://github.com/flipperdevices/flipperzero-firmware/pull/2668
• [LRFID] Add support for Nexkey/Nexwatch by @mauimauer in https://github.com/flipperdevices/flipperzero-firmware/pull/2680
• Add Carrier 42QHB12D8S by @minchogaydarov in https://github.com/flipperdevices/flipperzero-firmware/pull/2707
• BadUSB: script execution pause by @nminaylov in https://github.com/flipperdevices/flipperzero-firmware/pull/2700
• Implement support for reading Opal card (Sydney, Australia) by @micolous in https://github.com/flipperdevices/flipperzero-firmware/pull/2683
• [FL-3295] FuriHal: add bus abstraction by @skotopes in https://github.com/flipperdevices/flipperzero-firmware/pull/2614
• [FL-3330] fbt: added hooks for build & dist environments; added FW_ORIGIN_* macro for apps & SDK by @hedger in https://github.com/flipperdevices/flipperzero-firmware/pull/2705
• [FL-3335] Dolphin: new animation by @skotopes in https://github.com/flipperdevices/flipperzero-firmware/pull/2713
• [FL-3340] SubGhz: fix flipper crashes after exiting broadcast blocking message and crash cli by @Skorpionm in https://github.com/flipperdevices/flipperzero-firmware/pull/2714
• NFC: Fix gen1 writing with invalid BCC (lost fix from PR #2511) by @AloneLiberty in https://github.com/flipperdevices/flipperzero-firmware/pull/2710
• Update dolphin.py by @ZoeMeetAgain in https://github.com/flipperdevices/flipperzero-firmware/pull/2717
• NFC: fix MFC timings by @gornekich in https://github.com/flipperdevices/flipperzero-firmware/pull/2719

New Contributors

• @FelixLgr made their first contribution in https://github.com/flipperdevices/flipperzero-firmware/pull/2666
• @minchogaydarov made their first contribution in https://github.com/flipperdevices/flipperzero-firmware/pull/2686
• @technobulb made their first contribution in https://github.com/flipperdevices/flipperzero-firmware/pull/2701
• @micolous made their first contribution in https://github.com/flipperdevices/flipperzero-firmware/pull/2683

Ongoing

• Application catalog
• Furi & FuriHal improvements and release 1.0.0 preparation
• Documentation
• NFC refactoring
• Application and Service Loader refactoring

Full Changelog: https://github.com/flipperdevices/flipperzero-firmware/compare/0.83.1-rc...0.84.1-rc