Default HD audio on I9500 (or so it seems)

Hi everyone

As an owner of the i9500 I was annoyed from the really low quality of call I was having. I tried the latest modems but had no luck in enabling the HD audio as was mentioned here

Here is how I managed to improve my voice call - I have no idea if it will work for others with I9500 - but please if it does for you, do tell

1) Download the I9500 XXUBMEA modem (I9500_XXUBMEA_MODEM.rar) from here or here (source). extract the I9500_XXUBMEA_MODEM.tar.md5 from it.

2) put your S4 in ODIN mode (power off, press the volume-down + home key + power button, a warning appears, let go of the keys, press volume up)

3) start ODIN. (I used ODIN 3.07 but I assume any will work), Press the "phone" button, select the I9500_XXUBMEA_MODEM.tar.md5 file. check the auto reboot option. press start.

4) this was my ODIN log:
<ID:0/004> File analysis..
<ID:0/004> SetupConnection..
<ID:0/004> Initialzation..
<ID:0/004> Get PIT for mapping..
<ID:0/004> Firmware update start..
<ID:0/004> modem.bin
<ID:0/004> NAND Write Start!! 
<ID:0/004> Transmission Complete.. 
<ID:0/004> Now Writing.. Please wait about 2 minutes
<ID:0/004> Receive Response from boot-loader
<ID:0/004> RQT_CLOSE !!
<ID:0/004> RES OK !!
<ID:0/004> Removed!!
<ID:0/004> Remain Port ....  0 
<OSM> All threads completed. (succeed 1 / failed 0)

5) if successful, the phone will reboot. in my case it started but the mobile network was not working anymore. no problems.

5) time for service mode. Dial *#0011#
6) press menu key, than "back".
7) You're now in debug screen. press the menu key and "back". welcome to service mode
8) press the menu key and select 8 (Which is selecting the "WB-AMR status)
9) it should say


if that is the case, congratulations you just enabled the WB-AMR (well, you didn't but the firmware you installed did).

11) get the XXUFNC1 radio ( from here. if you're using a computer, copy it to the the phone

12) power off the phone. reboot into recovery (volume-up + home key + power key, let go when you see the Samsung logo). I have CWM-based recovery V6.0.3.3

13) select "install zip" and select the file.

14) reboot your phone (and fix root).

15) sound quality should be better now.

It improved my call sound quality - if it worked for you please share

I tried the "latest" Chinese modem (i9500_RADIO_ I9500ZCUGND1) and the sound quality was horrible... don't use it