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| − | [[File:Duo-fel-button.jpg|450px|thumb|Location of the FEL button on the MOD Duo]]
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| | [[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]] |
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| − | Troubleshooting section dedicated to the MOD Duo. | + | Troubleshooting section dedicated to the reinstall the MOD Duo software. |
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| − | == A note on different models and old kernel ==
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| | 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. | + | The new unit models have "MOD Duo" written and engraved above the right display. (see 1st picture on the right) |
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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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| − | 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/>
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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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| − | 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'''
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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]] if you need help on that.
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| − | # Download this special update file [http://download.moddevices.com/releases/modduo/tools/modduo-convert-nand_20200529.tar modduo-convert-nand_20200529.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
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| | == MOD Duo Factory Reset == | | == MOD Duo Factory Reset == |
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| − | Requirements: Linux or macOS, basic command-line knowledge<br>
| + | 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) | |
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| − | To begin:
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| − | # Click and hold down the FEL button on the back of the MOD Duo (in tiny hole), while you power it on.
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| − | # Hold it for 2 seconds, then release (The screens will freeze with the MOD logo and name)
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| − | # Connect the MOD Duo to your computer via USB cable
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| − | # Download this file: http://download.moddevices.com/releases/modduo/tools/duo-nand-mainline-factory-reset.tar.gz and extract it
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| − | # Open a terminal and 'cd' to the directory where duo-nand-mainline-factory-reset.tar.gz was extracted, ie:
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| − | <code language="console">cd ~/Downloads/duo-nand-mainline-factory-reset</code>
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| − | Now simply run:<br/>
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| − | <code language="console">./boot-fel-factory-restore.sh</code><br/>
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| − | (sudo will likely be needed here)
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| − | For non-64bit Linux or macOS systems, use the sunxi-fel binary from your distribution.
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| − | Continuing:
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| − | # 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**)
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| − | # Install a [[Factory Reset Images|MOD OS factory reset image]].
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| − | # Wait for the installation to complete (the unit will restart automatically).
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| − | Note: You can find MOD factory reset images in the [[Factory Reset Images]] section.
| + | For a factory reset using Linux or macOS see [[Troubleshooting Reinstall via CommandLine]]. |
