wiki:Internal/WimaxGS2
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Version 6 (modified by msherman, 7 years ago) ( diff )

Change Wimax Frequencies on a Virgin Mobile Samsung Galaxy S2

Instructions gaining root permissions

Basic instructions with build GB28 (should work with all other builds if they have the proper files). For conveniency, all files needed during the process can be downloaded from this link: www.winlab.rutgers.edu/~bronzino/downloads/GS2VM_root.zip

Requirements:

  • Windows
  • Samsung drivers (included in the zip file)

Instructions:

  • Open a shell session on the phone either using terminal emulator or adb
  • Type "getprop ril.MSL" and save the 6 numbers code returned
  • Open the dialer and type ##3282#
  • Select "view → Wimax". When prompted input the MSL previously retrieved.
  • Select "MRU". Long press the only button available and select the "Edit Mru" option. Change the frequency of channel 1 to 259000.
  • Go back and select "NAP-ID". Long press the first line and select "Write Napid". Set it to 4451db

The phone is ready to be connected to the GENI WiMax Base Station

NO ROOT METHOD

Requirements:

  • Alternative launcher that allows the creation of activities shortcuts such as Nova Launcher (the free version is enough).

Instructions (assuming you have installed Nova Launcher from the market):

  • Long press an empty spot in one of your home screens.
  • Select "Shortcuts → Activities → WimaxHiddenMenu → WIMAX_CFG" (There are two options for WIMAX_CFG, selects the one with subtitle "napid.Wimax_CFG")
  • Open the new icon created in the home screen
  • Select "MRU". Long press the only button available and select the "Edit Mru" option. Change the frequency of channel 1 to 259000.
  • Go back and select "NAP-ID". Long press the first line and select "Write Napid". Set it to 4451db

The phone is ready to be connected to the GENI WiMax Base Station

ALTERNATE NO ROOT METHOD (Tested on Sprint S2 Epic 4G Touch)

Requirements:

  • Free aLogcat app available on the Google Play Store (used to view Android internal debug logs).

Instructions (assuming you have aLogcat):

  • Open aLogcat and begin recording the log
  • Open the dialer and type ##3282#
  • Select "view → Wimax". When prompted for MSL, insert a 6-digit garbage value and press OK.
  • Open aLogcat, click the magnifying glass in the top right, and filter by "MSL result"
  • You will see your MSL as a 6 digit number in the log
  • Open the dialer and type ##3282#
  • Select "view → Wimax". When prompted input the MSL previously retrieved.
  • Select "MRU". Long press the only button available and select the "Edit Mru" option. Change the frequency of channel 1 to 259000.
  • Go back and select "NAP-ID". Long press the first line and select "Write Napid". Set it to 4451db

The phone is ready to be connected to the GENI WiMax Base Station

NO Root method, Tested on sprint galaxy s2

  • Install anycut app, to create shortcut to activities. APK is attached to this article.
  • Make shortcut to wimaxhiddenmenu
  • make shortcut to first entry of wimax_cfg
  • in wimax_cfg, set first NAPID to value: 4451db, and priority 1
  • in wimax hidden menu:
  1. open device
  2. FA Index[0]: Set to desired frequency, then press "Set"
  3. BW[0]: Set to desired Bandwidth, 6→ 10mhz, unsure of values of 5, and 0., then press "Set"
  4. FA Index[1]: Set to second desired frequency, then press "Set"
  5. BW[1]: Set to second desired Bandwidth, 6→ 10mhz, unsure of values of 5, and 0., then press "Set"
  6. FA Index[2]: Set to third desired frequency, then press "Set"
  7. BW[2]: Set to third desired Bandwidth, 6→ 10mhz, unsure of values of 5, and 0., then press "Set"
  8. IF FEWER THAN 3 FREQUENCIES DESIRED: follow above instructions, setting extras to 0.
  9. TO ENSURE THAT ONLY SELECTED FREQUENCIES ARE USED: Set "Best FA update option" to 0. Then press Set.

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