From: "Michael Büsch" <mb@bues.ch>
To: "Zedequias Marin (DECO)" <dudecco@gmail.com>
Cc: linux-wireless@vger.kernel.org, b43-dev@lists.infradead.org
Subject: Re: BCM4312 EEPROM corruption recovery help - HP Mini 110 U98Z049.00
Date: Sun, 2 Nov 2025 19:07:15 +0100 [thread overview]
Message-ID: <20251102190715.317960fa@barney> (raw)
In-Reply-To: <CALaz+jkqX=JX5ODuSJTm0k_qokgYidQ5+Zu1vBuu-zmFZ6JWqQ@mail.gmail.com>
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On Sun, 2 Nov 2025 10:27:10 -0300
"Zedequias Marin (DECO)" <dudecco@gmail.com> wrote:
> I found your 2011 thread about BCM4312 issues and need help recovering
> from EEPROM corruption.
>
> My Device: HP Mini 110
> WiFi Card: Broadcom BCM4312 802.11b/g LP-PHY (14e4:4315)
> Subsystem: Hewlett-Packard Company U98Z049.00
>
> Problem: I corrupted the EEPROM while trying to configure as WiFi
> repeater. The card is detected but no wireless interface is created.
> EEPROM shows repetitive FF/3F patterns.
>
> Request: Could anyone provide a known good EEPROM dump for BCM4312
> (14e4:4315) specifically for HP Mini 110/U98Z049.00, or guidance on
> EEPROM recovery?
>
> I have EEPROM backups and can provide diagnostic info.
Hi,
the PCI ID (14e4:4315) is stored in the wireless device's serial EEPROM.
If the EEPROM is corrupted, you need to find out which PCI ID it uses now.
You can do that with lspci -nn.
Once you found out which corrupted PCI ID your device uses, you can register this
new PCI ID to the b43 driver via sysfs to recognize (see PCI/sysfs documentation).
Then the driver will recognize your device again and you can flash the original
serial EEPROM to the device. See b43-tools/ssb_sprom documentation [1].
[1] https://github.com/mbuesch/b43-tools/tree/master/ssb_sprom
--
Michael Büsch
https://bues.ch/
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prev parent reply other threads:[~2025-11-02 18:10 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-02 13:27 BCM4312 EEPROM corruption recovery help - HP Mini 110 U98Z049.00 Zedequias Marin (DECO)
2025-11-02 18:07 ` Michael Büsch [this message]
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