I have an old Dell vostro 1015 laptop with a BCM4312 chip that is detected but has errors. The previous posts from 2022 did not help.

2026-07-13T13:46:19.846584+03:00 localhost kernel: b43-phy0: Broadcom 4312 WLAN found (core revision 15)
2026-07-13T13:46:19.846587+03:00 localhost kernel: b43-phy0: Found PHY: Analog 6, Type 5 (LP), Revision 1
2026-07-13T13:46:19.846598+03:00 localhost kernel: b43-phy0: Found Radio: Manuf 0x17F, ID 0x2062, Revision 2, Version 0
2026-07-13T13:46:19.846603+03:00 localhost kernel: Broadcom 43xx driver loaded [ Features: PNLS ]
2026-07-13T13:46:19.846606+03:00 localhost kernel: b43 ssb0:0: firmware: failed to load b43/ucode15.fw (-2)
2026-07-13T13:46:19.846609+03:00 localhost kernel: b43 ssb0:0: firmware: failed to load b43/ucode15.fw (-2)
2026-07-13T13:46:19.846613+03:00 localhost kernel: b43 ssb0:0: firmware: failed to load b43/ucode15.fw (-2)
2026-07-13T13:46:19.846616+03:00 localhost kernel: b43 ssb0:0: Direct firmware load for b43/ucode15.fw failed with error -2
2026-07-13T13:46:19.846619+03:00 localhost kernel: b43 ssb0:0: firmware: failed to load b43/ucode15.fw (-2)
2026-07-13T13:46:19.846631+03:00 localhost kernel: b43 ssb0:0: firmware: failed to load b43/ucode15.fw (-2)
2026-07-13T13:46:19.846635+03:00 localhost kernel: b43 ssb0:0: firmware: failed to load b43/ucode15.fw (-2)
2026-07-13T13:46:19.846638+03:00 localhost kernel: b43 ssb0:0: Direct firmware load for b43/ucode15.fw failed with error -2
2026-07-13T13:46:19.846641+03:00 localhost kernel: b43 ssb0:0: firmware: failed to load b43-open/ucode15.fw (-2)
2026-07-13T13:46:19.846645+03:00 localhost kernel: b43 ssb0:0: firmware: failed to load b43-open/ucode15.fw (-2)
2026-07-13T13:46:19.846648+03:00 localhost kernel: b43 ssb0:0: firmware: failed to load b43-open/ucode15.fw (-2)
2026-07-13T13:46:19.846660+03:00 localhost kernel: b43 ssb0:0: Direct firmware load for b43-open/ucode15.fw failed with error -2
2026-07-13T13:46:19.846664+03:00 localhost kernel: b43 ssb0:0: firmware: failed to load b43-open/ucode15.fw (-2)
2026-07-13T13:46:19.846668+03:00 localhost kernel: b43 ssb0:0: firmware: failed to load b43-open/ucode15.fw (-2)
2026-07-13T13:46:19.846671+03:00 localhost kernel: b43 ssb0:0: firmware: failed to load b43-open/ucode15.fw (-2)
2026-07-13T13:46:19.846674+03:00 localhost kernel: b43 ssb0:0: Direct firmware load for b43-open/ucode15.fw failed with error -2
2026-07-13T13:46:19.846678+03:00 localhost kernel: b43-phy0 ERROR: Firmware file "b43/ucode15.fw" not found
2026-07-13T13:46:19.846688+03:00 localhost kernel: b43-phy0 ERROR: Firmware file "b43-open/ucode15.fw" not found
2026-07-13T13:46:19.846693+03:00 localhost kernel: b43-phy0 ERROR: You must go to https://wireless.wiki.kernel.org/en/users/Drivers/b4
3#devicefirmware and download the correct firmware for this driver version. Please carefully read all instructions on this website.
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thanks