i installed 20230117-2 from unstable. Also installed 20221214-5<https://snapshot.debian.org/package/firmware-nonfree/20221214-5/#firmware-brcm80211_20221214-5> from the archive.
Both have similar issues on my system. For a moment everything looks fine and wifi starts working. In a few minutes the system freezes and after a little while it reboots. I managed to capture just a little more information from dmesg this time before the system froze [ 5.792752] brcmsmac bcma0:1: firmware: direct-loading firmware brcm/bcm43xx-0.fw [ 5.793398] brcmsmac bcma0:1: firmware: direct-loading firmware brcm/bcm43xx_hdr-0.fw [ 5.821173] brcmsmac bcma0:1: brcms_ops_bss_info_changed: qos enabled: false (implement) [ 5.821190] brcmsmac bcma0:1: brcms_ops_config: change power-save mode: false (implement) [ 5.873283] brcmsmac bcma0:1: brcms_ops_bss_info_changed: qos enabled: false (implement) [ 5.873297] brcmsmac bcma0:1: brcms_ops_config: change power-save mode: false (implement) [ 5.879522] r8188eu 1-3:1.0: firmware: direct-loading firmware rtlwifi/rtl8188eufw.bin [ 5.879537] r8188eu 1-3:1.0: Firmware Version 11, SubVersion 1, Signature 0x88e1 [ 7.880849] brcmsmac bcma0:1: brcms_ops_bss_info_changed: qos enabled: false (implement) [ 7.880861] brcmsmac bcma0:1: brcms_ops_config: change power-save mode: false (implement) [ 7.922274] wlp2s0b1: authenticate with cc:40:d0:bf:a6:9b [ 7.922291] wlp2s0b1: 80 MHz not supported, disabling VHT [ 7.924184] wlp2s0b1: send auth to cc:40:d0:bf:a6:9b (try 1/3) [ 7.932168] wlp2s0b1: authenticated [ 7.933930] wlp2s0b1: associate with cc:40:d0:bf:a6:9b (try 1/3) [ 7.941922] wlp2s0b1: RX AssocResp from cc:40:d0:bf:a6:9b (capab=0x1411 status=0 aid=12) [ 7.944845] brcmsmac bcma0:1: brcmsmac: brcms_ops_bss_info_changed: associated [ 7.944854] brcmsmac bcma0:1: brcms_ops_bss_info_changed: qos enabled: true (implement) [ 7.944869] wlp2s0b1: associated [ 7.963442] brcmsmac bcma0:1: wl0: brcms_c_d11hdrs_mac80211: txop exceeded phylen 159/256 dur 1778/1504 [ 7.992602] brcmsmac bcma0:1: wl0: brcms_c_d11hdrs_mac80211: txop exceeded phylen 137/256 dur 1602/1504 [ 8.034158] IPv6: ADDRCONF(NETDEV_CHANGE): wlp2s0b1: link becomes ready [ 9.068221] brcmsmac bcma0:1: brcms_ops_bss_info_changed: arp filtering: 1 addresses (implement) [ 9.432645] IPv6: ADDRCONF(NETDEV_CHANGE): wlx00e02dba0563: link becomes ready [ 12.674154] usb 1-5.4: reset high-speed USB device number 7 using xhci_hcd [ 52.564491] wlp2s0b1: deauthenticating from cc:40:d0:bf:a6:9b by local choice (Reason: 3=DEAUTH_LEAVING) [ 52.630119] brcmsmac bcma0:1: brcmsmac: brcms_ops_bss_info_changed: disassociated [ 52.630140] brcmsmac bcma0:1: brcms_ops_bss_info_changed: arp filtering: 1 addresses (implement) [ 52.630148] brcmsmac bcma0:1: brcms_ops_bss_info_changed: qos enabled: false (implement) [ 52.713824] brcmsmac bcma0:1: brcms_ops_bss_info_changed: qos enabled: false (implement) [ 52.713844] brcmsmac bcma0:1: brcms_ops_config: change power-save mode: false (implement) Please let me know if you need any more logs. I can upload them.

