TL;DR

• FuriHal: new SD card API
• Storage: various fixes and improvements
• Infrared: universal TV remote cleanup
• System: alternative file naming scheme, user-friendly error codes and fix instructions in Flipper application module, various fixes and improvements
• iButton: fixes and improvements
• Build system: various fixes and improvements
• SubGhz: fix crash on use of key with incorrect data, fix chat crash

Known Issues

• Rare Core2 HardFaults in sleep mode, a fix is being tested. Workaround: switch sleep mode to Legacy.
• A huge (HVAC raw data) infrared remote load causes an Out-of-Memory crash. A fix is coming in the next release. Meanwhile, you can split your remotes into smaller files.

What's Changed

• [FL-3563] StorageListRequest: size filter by @DrZlo13 in https://github.com/flipperdevices/flipperzero-firmware/pull/3018
• [FL-3543] Check the filetype of the update manifest by @Astrrra in https://github.com/flipperdevices/flipperzero-firmware/pull/3025
• Closed some TODO items by @skotopes in https://github.com/flipperdevices/flipperzero-firmware/pull/3024
• Moved roadmap link to readme by @skotopes in https://github.com/flipperdevices/flipperzero-firmware/pull/3014
• Added support for Mifare Classic 4K SAK 0x38 ATQA 0x02, 0x04 and 0x08 by @suaveolent in https://github.com/flipperdevices/flipperzero-firmware/pull/3009
• github: workflow trigger optimizations by @hedger in https://github.com/flipperdevices/flipperzero-firmware/pull/3030
• [FL-3314] Disconnect from BLE on protobuf error by @Astrrra in https://github.com/flipperdevices/flipperzero-firmware/pull/2955
• Added File Naming setting for more detailed naming by @m1-ins in https://github.com/flipperdevices/flipperzero-firmware/pull/3002
• [DOC] Removed defunct link in ReadMe.md by @SimplyLinn in https://github.com/flipperdevices/flipperzero-firmware/pull/3036
• Storage: force mount by @DrZlo13 in https://github.com/flipperdevices/flipperzero-firmware/pull/3033
• github: workflow improvements by @hedger in https://github.com/flipperdevices/flipperzero-firmware/pull/3032
• [FL-3583]Account for the "-" in line carry-over by @Astrrra in https://github.com/flipperdevices/flipperzero-firmware/pull/3038
• [FL-3566]iButton: Return to the file selection if file is corrupted by @Astrrra in https://github.com/flipperdevices/flipperzero-firmware/pull/3040
• github: don't cancel jobs if parallel ones failed by @hedger in https://github.com/flipperdevices/flipperzero-firmware/pull/3044
• Various Fixes and Improvements by @skotopes in https://github.com/flipperdevices/flipperzero-firmware/pull/3059
• SD-Card: proper HAL by @DrZlo13 in https://github.com/flipperdevices/flipperzero-firmware/pull/3058
• github: submit SDKs to prod & dev by @hedger in https://github.com/flipperdevices/flipperzero-firmware/pull/3060
• Snake: fixed deadlock caused by use of view_port_update while locking model by @skotopes in https://github.com/flipperdevices/flipperzero-firmware/pull/3063
• [FL-3596] fbt: added FW_CFG_ with build configuration by @hedger in https://github.com/flipperdevices/flipperzero-firmware/pull/3062
• [FL-3589] Sub-GHz: incorrect key parsing crash by @Skorpionm in https://github.com/flipperdevices/flipperzero-firmware/pull/3066
• github: potential fix for compact builds by @hedger in https://github.com/flipperdevices/flipperzero-firmware/pull/3067
• github: specified shell for SDK submission action by @hedger in https://github.com/flipperdevices/flipperzero-firmware/pull/3068
• github: final fixes for SDK publishing by @hedger in https://github.com/flipperdevices/flipperzero-firmware/pull/3069
• github: typo fix by @hedger in https://github.com/flipperdevices/flipperzero-firmware/pull/3070
• Fix DMA SPI memory increment define by @drunkbatya in https://github.com/flipperdevices/flipperzero-firmware/pull/3075
• SubGhz: Fix CLI subghz chat by @Skorpionm in https://github.com/flipperdevices/flipperzero-firmware/pull/3073

New Contributors

• @suaveolent made their first contribution in https://github.com/flipperdevices/flipperzero-firmware/pull/3009
• @m1-ins made their first contribution in https://github.com/flipperdevices/flipperzero-firmware/pull/3002
• @SimplyLinn made their first contribution in https://github.com/flipperdevices/flipperzero-firmware/pull/3036

Ongoing

• NFC refactoring
• Furi & FuriHal improvements and preparation for release version 1.0.0
• Documentation

Full Changelog: https://github.com/flipperdevices/flipperzero-firmware/compare/0.90.1...0.91.4