Wifi on S3 with Replicant

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I’m using Replicant on my main phone. As I’ve written before, I didn’t get Wifi to work. The other day leth in #replicant pointed me towards a CyanogenMod discussion about a similar issue. The fix does indeed work, and allowed me to connect to wifi networks and to setup my phone for Internet sharing. You need to run the following commands after every boot, disable/enable Wifi, and then it should work.

echo murata > /data/.cid.info
chown system /data/.cid.info
chgrp wifi /data/.cid.info
chmod 0660 /data/.cid.info

Digging deeper, I found a CM Jira issue about it, and ultimately a code commit. It seems the issue is that more recent S3’s comes with a Murata Wifi chipset that uses MAC addresses not known back in the Android 4.2 (CM-10.1.3 and Replicant-4.2) days. Pulling in the latest fixes for macloader.cpp solves this problem for me, and there is no need for the workaround above. I still need to load the non-free firmware images that I get from CM-10.1.3. I’ve created a pull request fixing macloader.cpp for Replicant 4.2 if someone else is curious about the details. You have to rebuild your OS with the patch for things to work (if you don’t want to, the workaround using /data/.cid.info works fine), and install some firmware blobs as below.

adb push cm-10.1.3-i9300/system/etc/wifi/bcmdhd_apsta.bin_b1 /system/vendor/firmware/
adb push cm-10.1.3-i9300/system/etc/wifi/bcmdhd_apsta.bin_b2 /system/vendor/firmware/
adb push cm-10.1.3-i9300/system/etc/wifi/bcmdhd_mfg.bin_b0 /system/vendor/firmware/
adb push cm-10.1.3-i9300/system/etc/wifi/bcmdhd_mfg.bin_b1 /system/vendor/firmware/
adb push cm-10.1.3-i9300/system/etc/wifi/bcmdhd_mfg.bin_b2 /system/vendor/firmware/
adb push cm-10.1.3-i9300/system/etc/wifi/bcmdhd_p2p.bin_b0 /system/vendor/firmware/
adb push cm-10.1.3-i9300/system/etc/wifi/bcmdhd_p2p.bin_b1 /system/vendor/firmware/
adb push cm-10.1.3-i9300/system/etc/wifi/bcmdhd_p2p.bin_b2 /system/vendor/firmware/
adb push cm-10.1.3-i9300/system/etc/wifi/bcmdhd_sta.bin_b0 /system/vendor/firmware/
adb push cm-10.1.3-i9300/system/etc/wifi/bcmdhd_sta.bin_b1 /system/vendor/firmware/
adb push cm-10.1.3-i9300/system/etc/wifi/bcmdhd_sta.bin_b2 /system/vendor/firmware/
adb push cm-10.1.3-i9300/system/etc/wifi/nvram_mfg.txt /system/vendor/firmware/
adb push cm-10.1.3-i9300/system/etc/wifi/nvram_mfg.txt_murata /system/vendor/firmware/
adb push cm-10.1.3-i9300/system/etc/wifi/nvram_mfg.txt_murata_b2 /system/vendor/firmware/
adb push cm-10.1.3-i9300/system/etc/wifi/nvram_mfg.txt_semcosh /system/vendor/firmware/
adb push cm-10.1.3-i9300/system/etc/wifi/nvram_net.txt /system/vendor/firmware/
adb push cm-10.1.3-i9300/system/etc/wifi/nvram_net.txt_murata /system/vendor/firmware/
adb push cm-10.1.3-i9300/system/etc/wifi/nvram_net.txt_murata_b2 /system/vendor/firmware/
adb push cm-10.1.3-i9300/system/etc/wifi/nvram_net.txt_semcosh /system/vendor/firmware/

4 Replies to “Wifi on S3 with Replicant”

  1. I was experiencing the same problem. Now wifi is working in my S3 with replicant. Thank you very much for reporting!! Unvaluable.

    How could I have that commands being executed always that the mobile is rebooted?

    • Nice to see this confirmed!

      Btw, the patch is included in Replicant 4.2 0003 so there is no need to patch anything today.

      /Simon