Difference between revisions of "Troubleshooting Reinstall Duo"

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[[File:Duo-fel-button.jpg|450px|thumb|Location of the FEL button on the MOD Duo]]
 
 
[[File:Duo-models.png|450px|thumb|Different MOD Duo models<br>LEFT: older model with nand flash; RIGHT: newer model with eMMC]]
 
[[File:Duo-models.png|450px|thumb|Different MOD Duo models<br>LEFT: older model with nand flash; RIGHT: newer model with eMMC]]
  
Troubleshooting section dedicated to the MOD Duo.
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Troubleshooting section dedicated to the reinstall the MOD Duo software.
 
 
== A note on different models and old kernel ==
 
  
 
Please note that there are 2 different kinds of MOD Duo units - older ones with nand flash and newer ones with eMMC.<br/>
 
Please note that there are 2 different kinds of MOD Duo units - older ones with nand flash and newer ones with eMMC.<br/>
The new unit models have their name (like "MOD Duo") written and engraved above the right display.
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The new unit models have "MOD Duo" written and engraved above the right display. (see 1st picture on the right)
 
 
Since version 1.10, we changed the kernel used by the Duo, but this update only automatically applies to new unit models.<br/>
 
For the older models, we need to either do a special update step, or a full factory reset.<br/>
 
In both cases the disk contents (user data) is completely wiped out.
 
 
 
You can check which kernel version you are running by looking at the "System information" in the advanced settings.<br/>
 
Kernel release <b>5.4.38-rt21-modduo</b> is the newer one, while <b>3.4.104-rt139-modduo</b> is the older one.<br/>
 
The new kernel offers better performance and reliability, so you are still using the old one please update!
 
 
 
== Special update for nand units ==
 
'''NOTE: Only for older MOD Duo units with nand flash'''
 
 
 
In order to make older MOD Duo units switch to the new kernel we can use a special update file.<br/>
 
This was created mainly for those users who are using Windows or are not comfortable with the command-line.
 
 
 
''Please do not power off your unit once the procedure has started!''
 
 
 
To begin:
 
# Put the unit into recovery mode. See [[Releases#Releases|Releases]] if you need help on that.
 
# Download this special update file [http://download.moddevices.com/releases/modduo/tools/modduo-convert-nand_20201028.tar modduo-convert-nand_20201028.tar]
 
# Install the tar file in the previous step, and wait until the unit boots itself again in restore mode (this might take a few minutes)
 
# Install a MOD factory reset image from the [[Factory Reset Images]] section.
 
# Wait until the MOD sets leds green and reboots itself
 
  
 
== MOD Duo Factory Reset ==
 
== MOD Duo Factory Reset ==
  
Requirements: Linux or macOS, basic command-line knowledge<br>
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For a factory reset using Windows, see [[Troubleshooting Reinstall via LiveSuit]]. (applies only to older MOD Duo units with nand flash)
For a factory reset under Windows, see [[Troubleshooting Reinstall via LiveSuit]]. (applies only to older MOD Duo units with nand flash)
 
 
 
To begin:
 
# Click and hold down the FEL button on the back of the MOD Duo (in tiny hole), while you power it on.
 
# Hold it for 2 seconds, then release (The screens will freeze with the MOD logo and name)
 
# Connect the MOD Duo to your computer via USB cable
 
# Download this file: http://download.moddevices.com/releases/modduo/tools/duo-nand-mainline-factory-reset-v2.tar.gz and extract it
 
# Open a terminal and 'cd' to the directory where duo-nand-mainline-factory-reset-v2.tar.gz was extracted, ie:
 
<code language="console">cd ~/Downloads/duo-nand-mainline-factory-reset-v2</code>
 
 
 
Now simply run:<br/>
 
<code language="console">./boot-fel-factory-reset.sh</code><br/>
 
(sudo will likely be needed here)
 
 
 
If the above command fails with "USB FEL device not found", try a different usb port of the computer.
 
It might not work with usb hubs or usb-type-c/thunderbolt adapters, so connecting directly to a USB port is preferred..
 
 
 
For non-64bit Linux systems, use the sunxi-fel binary from your distribution.
 
 
 
Continuing:
 
# After the script finishes, wait for around 1 minute and the MOD Duo will boot into recovery mode. (confirmed by LEDs turning blue. '''note that sometimes the display does not change''')
 
# Install a [[Factory Reset Images|MOD OS factory reset image]].
 
# Wait for the installation to complete (the unit will restart automatically).
 
  
Note: You can find MOD factory reset images in the [[Factory Reset Images]] section.
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For a factory reset using Linux or macOS see [[Troubleshooting Reinstall via CommandLine]].

Latest revision as of 13:55, 15 March 2023

Different MOD Duo models
LEFT: older model with nand flash; RIGHT: newer model with eMMC

Troubleshooting section dedicated to the reinstall the MOD Duo software.

Please note that there are 2 different kinds of MOD Duo units - older ones with nand flash and newer ones with eMMC.
The new unit models have "MOD Duo" written and engraved above the right display. (see 1st picture on the right)

MOD Duo Factory Reset

For a factory reset using Windows, see Troubleshooting Reinstall via LiveSuit. (applies only to older MOD Duo units with nand flash)

For a factory reset using Linux or macOS see Troubleshooting Reinstall via CommandLine.