Enable rSAP on the Sony Xperia SP c5303

Enable Qualcomm SIM Access

2016. április 18. - logarex





You need to enable rSAP only once for your phone.

Alternative: Enable rSAP With QPST

Some phones don't support the diag port from within Android. Then you may try the more complicated procedure using QPST. 

This is done in 2 basic Steps:

  1. Set phone's USB to "diag" mode and install drivers for this mode
  2. Run QPST tool to fix the setting


PC environment

  1. Android SDK Platform-tools
  2. Google USB Driver
  • Set the ADB tools path:

System Settings, Environment variable, Path

edit and add "C: Program Files (x86) \ Android \ android-sdk \ Platform-Tools "


install pc-companion to adb driver

To disable the signature of the driver.

I think that easy or so will come out a lot and find information on the net.

Hold down the shift key try over the restart.

How to Disable Driver Signature Verification on 64-Bit Windows 8.1 or 10

Download the necessary files

Since it is a suspicious file, it is recommended that "always a virus check." 

Installation of QPST

Installation of drivers entering the DIAG mode

How to enable developer settings

  1. Go to the settings menu, and scroll down to "About phone." Tap it.
  2. Scroll down to the bottom again, where you see "Build number." (Your build number may vary from ours here.)
  3. Tap it seven (7) times. After the third tap, you'll see a playful dialog that says you're four taps away from being a developer.

To change the USB connection mode of Xperia SP to "USB Debugging". How to change, "Settings" → "option for developers" → ON "USB Debugging".

Open CMD:

windows + X CMD

>adb shell
* daemon not running. starting it now on port 5037 *
* daemon started successfully *
shell@C5303:/ $ su
root@C5303:/ # setprop persist.usb.eng 1
root@C5303:/ #

This okay.

Settings menu → in the developer options → USB debugging off, remove usb cable from the phone

USB debugging turn it back on Once after about 10 seconds

Then replug the phone!

When you open the Device Manager Find out five C5303 written as "other devices" in order. Select the device in the right-click → Properties → Open advanced. Opening the "hardware ID" in the pull-down menu at the end of the hardware ID looks for "MI_04".


Modem devices required in this work, VID = 0FCE,  PID = 5146, REV = 0228 MI = 04 of those.


In Update Driver If you find, to specify the directory in which the rewriting earlier "HtcUsbMdmV64.inf" or "htcdiag.inf". The modified driver installation is complete.


htc_driver_ok_3.jpgRun QPST


Open QPST Configuration from windows Start menu, go to Ports tab page and click on Add New Port.... Type (the remembered)COM3 to the "Port:" text box and COM3 to the "Port Label:" text box. Than click on OK.
Active Phones tab page should now look like this:


Now you can use QPST.

Open EFS Explorer from windows Start menu. It may take a moment to read data from your device.

  1. On left side you can see a folder tree like in file explorer. Navigate to /nv/item_files/modem/qmi/uim
  2. Click right on right side and than Copy Item File from PC. Browse to EFS Entry folder of downloaded package and choose file sap_security_restrictions.efs_explorer.jpg
  3. Close all windows and reboot your device. 
  4. After the reboot, If there is no problem, then run windows + X  Command Line

    >adb shell
    * daemon not running. starting it now on port 5037 *
    * daemon started successfully *
    shell@C5303:/ $ su
    root@C5303:/ # setprop persist.usb.eng 0
    root@C5303:/ # exit
    shell@C5303:/ $ exit

  5.  Now go to Google Play and download app Bluetooth SIM Access Install and app Bluetooth SIM Access

  6. Open Install app and click on Install system files. The phone have to reboot after installation. If you want to verify successful installation, open app again, the desintall button have to be enabled now.
  7. Enable your Bluetooth
  8. Open Bluetooth SIM Access app go to Settings -> Check SIM Access. If there no errors and several entries with green check marks, than rSAP is working now.


Thank you Boolee,r271-635 and Das.Flaigsi for your tutorial, which showed me how to installation of drivers entering the DIAG mode

Thank you usofttech.com, for modified HTC Diag Driver

Special thanks goes to Martin , for developing his great apps and making our phones better. 


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