TL;DR

• New app: AVR Flasher. Can act as AVR ISP Programmer or do read/write in standalone mode
• Storage: proper filesystem timestamps, bug fixes and improvements
• Gui: icon rotation and remove obsolete icons, recursive mutex in view model
• BadUSB: new WAIT_FOR_BUTTON_PRESS command
• Build system: major ufbt update
• Furi: improved thread life cycle, ensures TCB release on thread join
• FuriHal: naming cleanup, extra pulls on some pins
• WeatherStation: TX141TH-BV2 protocol extended support
• Nfc: bug fixes and improvements
• Picopass: dictionary attack progress, more details in info screen

What's Changed

• View Model: recursive mutex by @DrZlo13 in https://github.com/flipperdevices/flipperzero-firmware/pull/2532
• Improved thread lifecycle by @DrZlo13 in https://github.com/flipperdevices/flipperzero-firmware/pull/2534
• Elite progress by @bettse in https://github.com/flipperdevices/flipperzero-firmware/pull/2481
• RPC: increase max message size by @DrZlo13 in https://github.com/flipperdevices/flipperzero-firmware/pull/2543
• FatFS: use rtc for timestamping by @hedger in https://github.com/flipperdevices/flipperzero-firmware/pull/2555
• Add more detail to saved info screen by @bettse in https://github.com/flipperdevices/flipperzero-firmware/pull/2548
• BadUSB: added WAIT_FOR_BUTTON_PRESS functionality by @p4p1 in https://github.com/flipperdevices/flipperzero-firmware/pull/2544
• WS: fix protocol TX141TH-BV2 by @Skorpionm in https://github.com/flipperdevices/flipperzero-firmware/pull/2559
• Fixing parsing troika card number by @achistyakov in https://github.com/flipperdevices/flipperzero-firmware/pull/2536
• Furi: more gpio checks in HAL by @skotopes in https://github.com/flipperdevices/flipperzero-firmware/pull/2549
• [FL-3224] SD Driver: do not cache sd status. by @DrZlo13 in https://github.com/flipperdevices/flipperzero-firmware/pull/2560
• [FL-3162] Moved ufbt to fbt codebase by @hedger in https://github.com/flipperdevices/flipperzero-firmware/pull/2520
• [FL-2524] Graphics cleanup and icon rotation by @Astrrra in https://github.com/flipperdevices/flipperzero-firmware/pull/2561
• [AVR_ISP] add AVR ISP Programmer FAP by @Skorpionm in https://github.com/flipperdevices/flipperzero-firmware/pull/2475
• [FL-3232] FuriHal: fix gpio naming and add explicit pulls for vibro, speaker and ir_tx by @skotopes in https://github.com/flipperdevices/flipperzero-firmware/pull/2565
• Scripts: added stub file artifact to sconsdist for older ufbt by @hedger in https://github.com/flipperdevices/flipperzero-firmware/pull/2568
• Fix gpio state isp programmer by @Skorpionm in https://github.com/flipperdevices/flipperzero-firmware/pull/2567
• ufbt: project & debugging updates by @hedger in https://github.com/flipperdevices/flipperzero-firmware/pull/2572
• [FL-3241] NFC disable EMV support by @gornekich in https://github.com/flipperdevices/flipperzero-firmware/pull/2571
• Bugfix: ISP Programmer and SubGhz by @Skorpionm in https://github.com/flipperdevices/flipperzero-firmware/pull/2574

New Contributors

• @achistyakov made their first contribution in https://github.com/flipperdevices/flipperzero-firmware/pull/2536

Ongoing

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

Full Changelog: https://github.com/flipperdevices/flipperzero-firmware/compare/0.80.1...0.81.1