37 lines
1.5 KiB
Markdown
37 lines
1.5 KiB
Markdown
# Downgroud DLink firmware v1.1+
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First of all you should check if you are above v1.1+ as this guide should be mandatory.
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DLink and other manufacturers have included a signature system in their routers to be tamper-free, the Dir-819 fits among them. That's why we have to downgroud.
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## Requirements and Files
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- DLink Firmware [v1.0](files/DIR-819_A1_V1.0_Encrypt.bin) and [v1.02](files/DIR-819_A1_V1.02_Unencrypt.bin)
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- OpenWRT flash names includes in the file initramfs-kernel.
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### Steps
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1. go to the router's web interface (usually http://192.168.0.1) and authenticate with the password (Default password: `admin`).
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2. Go to update firmware or firmware.
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3. Select the v1.0 file to downgroud.
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4. Wait to restart the router and repeat the previous step for firmware v1.02.
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5. Now go to the firmware tab again, and select the OpenWRT firmware. And wait to reboot.
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Be happy and welcome to OpenWRT.
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## Problems and Solutions
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1. If the router restarts and the CPU starts to warm up, turn it off immediately as you've just created a recoverable brick.
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- You will need to have a burner to burn (literally) the OpenWRT firmware directly into NOR memory.
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- You are literally alone to make the recovery.
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2. The CPU is at normal temperature but does not start OpenWRT.
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- Check if you can connect to the router [serial](serial.md).
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- If you are able to [connect to serial](serial.md) you can download the image via tftp and write the image with dd command or use the sysupgrade command.
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