Difference between revisions of "Troubleshooting Reinstall Duo"

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The new unit models have their name (like "MOD Duo") written and engraved above the right display.
 
The new unit models have their name (like "MOD Duo") written and engraved above the right display.
  
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Since version 1.10, we changed the kernel used by the Duo, but this update only automatically applies to new unit models.<br/>
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Since version 1.10, we changed the kernel used by the Duo, but this update does not happen automatically to older units with nand flash.<br/>
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For the older models, we need to either do a special update step, or a full factory reset.<br/>
 
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In both cases the disk contents (user data) is completely wiped out.
 
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You can check which kernel version you are running by looking at the "System information" in the advanced settings.<br/>
 
You can check which kernel version you are running by looking at the "System information" in the advanced settings.<br/>
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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/>
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Kernel release <b>3.4.104-rt139-modduo</b> is the older one, while anything above <b>5.4</b> is the new and good.<br/>
 
The new kernel offers better performance and reliability, so you are still using the old one please update!
 
The new kernel offers better performance and reliability, so you are still using the old one please update!
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== Special update for nand units ==
 
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'''NOTE: Only for older MOD Duo units with nand flash. MOD also recommends doing a [[Troubleshooting Reinstall Duo#MOD_Duo_Factory_Reset|MOD Duo Factory Reset]] instead of this special update.'''
 
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In order to make older MOD Duo units switch to the new kernel we can use a special update file.<br/>
 
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This was created mainly for those users who are using Windows or are not comfortable with the command-line.
 
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''Please do not power off your unit once the procedure has started!''
 
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To begin:
 
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# Put the unit into recovery mode. See [[Releases#Releases|Releases]] if you need help on that.
 
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# Download this special update file [https://download.moddevices.com/releases/modduo/tools/modduo-convert-nand_20201028.tar modduo-convert-nand_20201028.tar]
 
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# 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)
 
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# Install a MOD factory reset image from the [[Factory Reset Images]] section.
 
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# Wait until the MOD sets leds green and reboots itself
 

Revision as of 13:39, 15 March 2023

Location of the FEL button on the MOD Duo
Different MOD Duo models
LEFT: older model with nand flash; RIGHT: newer model with eMMC

Troubleshooting section dedicated to the MOD Duo.

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.

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.
The new unit models have their name (like "MOD Duo") written and engraved above the right display.

Since version 1.10, we changed the kernel used by the Duo, but this update does not happen automatically to older units with nand flash.
You can check which kernel version you are running by looking at the "System information" in the advanced settings.
Kernel release 3.4.104-rt139-modduo is the older one, while anything above 5.4 is the new and good.
The new kernel offers better performance and reliability, so you are still using the old one please update!

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