AirPods 5 generating daily AccessoryCrash logs after 11 PM

I'm getting AccessoryCrash logs from my AirPods almost every night after 11 PM (JST).

My iPhone and AirPods are already on the latest firmware, but the crashes keep happening.

The logs point to firmware-update-related services (e.g. UARP) and very high heap usage, which looks like an OOM issue on the earbuds.

{"bug_type":"305","timestamp":"2026-10-19 23:39:38.00 +0900","os_version":"iPhone OS 27.0.1 (24A446)","roots_installed":0,"incident_id":"90BA6148-8333-4F1A-995E-D3BE685CEE21"}

{"accessory_release_type":"Release","bug_type":"305","accessory_os_train":"RTKitOS 9A350 ","application-info":{"side":"","role":"bud"},"crashlogs":[{"crashlog":{"tasks":[{"stack":["0x000000000806409c","0x00000000080633dc","0x00000000080631ac"],"description":" 0 power | 000\/000 | 408\/1024 | RUNNABLE | 0x200016c0"},{"stack":["0x000000000806409c","0x0000000008009f6a","0x0000000008051c0c"],"description":" 1 main | 015\/015 | 1520\/4096 | RUNNABLE | 0"},{"stack":["0x000000000806409c","0x00000000080638ce","0x000000000806361a","0x000000000803ccba","0x00000000080484fa"],"description":" 2 TestService | 015\/015 | 288\/3072 | SEMWAIT | 0x2001beb8"},{"stack":["0x000000000806409c","0x00000000080638ce","0x0000000008038124"],"description":" 3 usbTxService | 016\/016 | 160\/1024 | SEMWAIT | 0x2001b2a0"},{"stack":["0x000000000806409c","0x00000000080638ce","0x000000000806361a","0x000000000803ccba","0x000000000800e1e6"],"description":" 4 magnetiteService | 015\/015 | 360\/1536 | SEMWAIT | 0x2001adc0"},{"stack":["0x000000000806409c","0x00000000080638ce","0x000000000806361a","0x000000000803ccba","0x000000000803d4d0"],"description":" 5 eepromManagerService | 015\/015 | 672\/1536 | SEMWAIT | 0x2001a770"},{"stack":["0x000000000806409c","0x00000000080638ce","0x000000000806361a","0x000000000803ccba","0x0000000008024910"],"description":" 6 locustRight | 015\/015 | 840\/1536 | SEMWAIT | 0x2001a0c8"},{"stack":["0x000000000806409c","0x00000000080638ce","0x000000000806361a","0x000000000803ccba","0x0000000008024910"],"description":" 7 locustLeft | 015\/015 | 840\/1536 | SEMWAIT | 0x20019a50"},{"stack":["0x000000000806409c","0x00000000080638ce","0x000000000806361a","0x000000000803ccba","0x00000000080214f8"],"description":" 8 budSMRight | 015\/015 | 368\/2048 | SEMWAIT | 0x20019378"},{"stack":["0x000000000806409c","0x00000000080638ce","0x000000000806361a","0x000000000803ccba","0x00000000080214f8"],"description":" 9 budSMLeft | 015\/015 | 400\/2048 | SEMWAIT | 0x20018ac8"},{"stack":["0x000000000806409c","0x00000000080638ce","0x000000000803e332"],"description":" 10 preventNap | 014\/014 | 144\/256 | RUNNABLE | 0"},{"description":"*11 uarpL4Service | 015\/015 | 1288\/2560 | RUNNABLE | 0"},{"stack":["0x000000000806409c","0x00000000080638ce","0x000000000806361a","0x000000000803ccba","0x0000000008033e5e"],"description":" 12 qspiManager | 015\/015 | 296\/1024 | SEMWAIT | 0x200176e8"},{"stack":["0x000000000806409c","0x00000000080638ce","0x000000000806361a","0x000000000803ccba","0x0000000008017874"],"description":" 13 bqMgrService | 015\/015 | 888\/2048 | SEMWAIT | 0x20017230"},{"stack":["0x000000000806409c","0x00000000080638ce","0x000000000806361a","0x000000000803ccba","0x0000000008013efa"],"description":" 14 fwupWorker | 015\/015 | 232\/1536 | SEMWAIT | 0x20016a08"},{"stack":["0x000000000806409c","0x00000000080638ce","0x0000000008032942"],"description":" 15 fwErase | 015\/015 | 208\/512 | SEMWAIT | 0x200163c8"},{"stack":["0x000000000806409c","0x00000000080638ce","0x000000000806513a"],"description":" 16 Broker Workloop | 030\/030 | 328\/2048 | SEMWAIT | 0x20016138"}],"exception":"0x20","panic":"PANIC - FATAL: ","heap-usage":"118608 \/ 118784","mailboxes":[],"crashlog-version":"03.03","uuid":"f558bf88-b1ff-3c12-8ed3-10bbfc6fb4ae","call-stack":{"stack":["0x00000000080620b2","0x0000000008061eb8","0x0000000008061d82","0x000000000800a25e","0x0000000008031c78","0x0000000008013dc8","0x0000000008056dc8","0x0000000008053172","0x00000000080534d0","0x0000000008057f6a","0x00000000080159a0"],"stack-description":"Faulting task 11 Call Stack:"},"scenario":{"active_scenarios":[]}},"core":"AP"}],"accessory_machine_config":"A3529","accessory_os_version":"9A350 ","accessory_pid":0,"accessory_type":"audio","UI_country_code":"US","analytics_test_mode":false,"log-version":"1.0","crashTime":"0x000000000a21fe9f"}