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Important Make a backup of your internal µSD card just in case. The Sparrow Extended application constitutes the graphical user interface (GUI) of the DHO 800/900. It is the primary application of the oscilloscope and provides the user with the full complement of its functionality. The oscilloscope utilises an Android operating system, thereby enabling the installation of supplementary tools such as the DHOActions panel. This panel facilitates the execution of SCPI scripts or other applications from the main screen. Luckily, the GUI can be easily replaced by uninstalling the original application, Sparrow, and installing a replacement application with unlocked and extended functionalities. You can easily undo this process at any time by uninstalling the extended version and installing the original from your backup. No other files are changed in the system. There are two versions of the Sparrow Extended: the "normal" version and the "system" version. The original application from the manufacturer contains special signatures, which prevent us from installing an application with the same privileges. Consequently, after uninstalling the manufacturer's application, it is possible to install the "normal" version, which contains a different signature but fewer privileges. This means that it will not be possible to perform certain operations that require system privileges, such as taking a screenshot from the application. However, it is possible to install a "system" version, provided that the device has first been patched to accept other signatures than those issued by the manufacturer. In such a case, the application will have all the privileges of the original application. Warning If you are planning to install the system version, you MUST FIRST obtain system permission by patching the system before installing the system APK. This is an advanced procedure that must be carried out carefully. Look for the guide here: #8 For install the Sparrow extended application follow the next steps: Download and extract the Sparrow extended application to a known folder and open a terminal window (CMD) in that folder. Rename the selected version (normal or system) to Sparrow.apk The ADB tool can be obtained from the following link: https://developer.android.com/tools/releases/platform-tools or by uncompressing the file minimal_adb_fastboot where you will find a minimal ADB toolkit, then follow this guide: ::####################################################################################
::# CONNECT to the Rigol DHO, replace ###.###.###.### with the IP of the device.
::####################################################################################
adb connect ###.###.###.###:55555
adb root
::####################################################################################
::# UNINSTALL old version
::####################################################################################
adb shell am force-stop com.rigol.launcher
adb shell am force-stop com.rigol.scope
adb shell pm clear com.rigol.scope
adb shell pm uninstall com.rigol.scope
adb shell pm uninstall --user 0 com.rigol.scope
::####################################################################################
::# INSTALL the new Sparrow extended
::####################################################################################
adb install -g -r "Sparrow.apk"
adb rebootIf you got an error message while trying to install the new Sparrow.apk Try this procedure and then try to install the new APK again: ::####################################################################################
::# RENAME Sparrow stock system app and REMOVE the Sparrow data:
::####################################################################################
adb shell
su
mount -o rw,remount /system
mv /system/app/Sparrow/Sparrow.apk /system/app/Sparrow/Sparrow.apk.disabled
rm -rf /data/app/com.rigol.scope-1
sync
reboot |
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Replies: 8 comments 22 replies
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Hello, |
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Hello, Now my oszi stucks ar the big R image when booting. ADB connect is still possible. Could you help me please? |
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That happens because missing some permissions or because code formatting error due to the text editor. |
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Ok, what would be the correct way to comment out the line, and how could I fix it? |
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The stock permissions for those scripts are 777 > adb shell
$ ls -l /rigol/shell/start_rigol_app.sh
-rwxrwxrwx 1 root root 5839 2024-09-07 00:08 /rigol/shell/start_rigol_app.shSo you can use chmod to restore those permissions |
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Now it works, thank you for your support! |
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Is there a way to revert this custom interface back? |
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Yes, uninstall com.rigol.scope, then reinstall your backup copy in the same way that you install the custom apk. If you don't have a backup, you can get the original application by uncompressing the curren firmware package. |
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Updated to include an additional procedure if you want to enable system permissions to take screenshots from within the application |
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If someone updates their scope type from dho802 to dho824 to get the increase in specs using a modified vendor.bin, is there a way to adjust the interface so that the two extra channels which don't physically exist dont show up? that would be awesome if that could be user configured. |
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This could be done, but it will only be a cosmetic solution for the main screen, all other options will list the additional channels. |
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The new version will unlock all the functionality for the DHO802 without change the device model. |
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Background:DHO924S Hardware 8, was running 00.01.04 Working from MacBook Pro M4, Tahoe 26.1 with VMWare Fusion & Windows 11. Android Debug Bridge version 1.0.41 I tried for possibly 6 hours to find up-to-date instructions to make a backup, could not find anything. PS C:\Users\andre\PlatformTools> ./adb connect 192.168.1.38:55555 At this stage the scope reboot but after ~30min wait still just showing the "RIGOL" logo on a blank background... Any suggestions? |
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It seems that you forgot to rename/remove the odex file, from #8: adb connect ###.###.###.###:55555
adb root
adb shell mount -o rw,remount /system
adb shell mv /system/framework/services.jar /system/framework/services_jar.orig
adb shell mv /system/framework/oat/arm64/services.odex /system/framework/oat/arm64/services_odex.origAlso, if you have a system that has previously been patched or if you have found this particular .dex file, you must execute the following: adb shell rm /data/dalvik-cache/arm64/system@framework@services.jar@classes.dex |
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Have handed it in at local Rigol agent, might cost me a fair bit but I should get it back working, with warranty intact.
The device had never been modified prior to this week's attempt. When I get it back I suspect it will be in exact same never modified configuration. My question is now...
How do I again do the extended GUI installation but 100% correct and in sequence?
What are the exact commend necessary to complete?
All help appreciated,
André M. Maree
…On Thursday, 6 November 2025 at 01:01, Miguel Risco-Castillo ***@***.***> wrote:
Try extracting the SD card using a pair of tweezers.
—
Reply to this email directly, [view it on GitHub](#4 (comment)), or [unsubscribe](https://github.com/notifications/unsubscribe-auth/AAYT7GB77E5CLRUL6PSNE7T33J6UXAVCNFSM6AAAAABIIAV3PGVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTIOBYGU3TKNI).
You are receiving this because you commented.Message ID: ***@***.***>
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Hi, good news! I'm glad you managed to solve your issue. |
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I have deleted some old posts to keep this thread clean. The current installation steps for the updated Sparrow are in the first post, and the steps for gaining system permissions are in the referenced post. The system permissions step is risky and must be carried out carefully, this is why it's separate from the normal installation process. |
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ok EDIT: I ran through the procedure and ended up on a blank RIGOL screen. After much finddling around I noticed and I then tried the solution for the signature mismatch above and I finally have a scope again. Probably worth a notice ;) |
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If you have already patched Android to allow the Sparrow system version you must include the "-r" in your installation command: adb install -g -r Sparrow_Extended_v0.7.1-system.apk |
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Hello, I have an 802 with version 1.04. I downloaded the files and followed the steps, but I cannot send the .apk. It keeps giving me a signature error. I have attached the steps. What could it be? C:\Users\lenovo\Downloads\scrcpy-win64-v3.3.4\app>cd..
C:\Users\lenovo\Downloads\scrcpy-win64-v3.3.4>adb shell am force-stop com.rigol.launcher
C:\Users\lenovo\Downloads\scrcpy-win64-v3.3.4>adb shell am force-stop com.rigol.scope
C:\Users\lenovo\Downloads\scrcpy-win64-v3.3.4>adb shell pm clear com.rigol.scope
Success
C:\Users\lenovo\Downloads\scrcpy-win64-v3.3.4>adb shell pm uninstall --user 0 com.rigol.scope
Success
C:\Users\lenovo\Downloads\scrcpy-win64-v3.3.4>adb install -g -r "Sparrow.apk"
Performing Streamed Install
adb.exe: failed to stat Sparrow.apk: No such file or directory
C:\Users\lenovo\Downloads\scrcpy-win64-v3.3.4>adb install -g -r "Sparrow_Extended_v0.7.1-system.apk"
Performing Streamed Install
adb.exe: failed to install Sparrow_Extended_v0.7.1-system.apk: Failure [INSTALL_FAILED_UPDATE_INCOMPATIBLE: Package com.rigol.scope signatures do not match the previously installed version; ignoring!]
C:\Users\lenovo\Downloads\scrcpy-win64-v3.3.4>adb shell
rk3399_rigol:/ # su
rk3399_rigol:/ # mount -o rw,remount /system
em/app/Sparrow/Sparrow.apk /system/app/Sparrow/Sparrow.apk.disabled <
rk3399_rigol:/ # rm -rf /data/app/com.rigol.scope-1
rk3399_rigol:/ # sync
rk3399_rigol:/ # reboot
C:\Users\lenovo\Downloads\scrcpy-win64-v3.3.4>adb connect 192.168.1.61:55555
already connected to 192.168.1.61:55555
C:\Users\lenovo\Downloads\scrcpy-win64-v3.3.4>adb root
restarting adbd as root
C:\Users\lenovo\Downloads\scrcpy-win64-v3.3.4>adb root
adbd is already running as root
C:\Users\lenovo\Downloads\scrcpy-win64-v3.3.4>adb connect 192.168.1.61:55555
already connected to 192.168.1.61:55555
C:\Users\lenovo\Downloads\scrcpy-win64-v3.3.4>adb install -g -r "Sparrow.apk"
Performing Streamed Install
adb.exe: failed to install Sparrow.apk: Failure [INSTALL_FAILED_UPDATE_INCOMPATIBLE: Package com.rigol.scope signatures do not match the previously installed version; ignoring!]Edited for better formatting |
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Thank you, it worked well. I have two questions:
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If you already have the DHOTools, you do not need the fftAvg application. |
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> If you already have the DHOTools, you do not need the fftAvg application. OK, but DHO tools does not appear in the DHO action menu. I don't know why. |
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the default DHO action menu includes practically nothing. There's another post about changing its config to display more entries. You can also just install an android launcher and access it that way. Window splitting is done by long-pressing in the app switcher |
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The DHOActions includes some examples, but you need to edit the configuration file to add more buttons: #9 |
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Updated to include an additional procedure if you want to enable system permissions to take screenshots from within the application