How to upgrade the boot loader of coolpi 4b？
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If you need to boot armbian normally, you need to update the loader file to version 0104.
Follow the steps below to update the loader:
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Download the latest loader file One Drive
![5594e1d4-3a7b-46fc-a7b5-2a9fe418dfc0-image.png]
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Short the 2 pins shown by the arrow.
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The USB interface and computer connection.
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Plug in the power supply and open the upgrade software. The machine enters the maskrom upgrade mode.
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choose to write by address
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Click Execute to complete the loader update.
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If the computer prompts that the USB driver cannot be found, please download and install the driver software first.One Drive
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Referenced by G george
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@george Could you give some guidance on what type of USB cable is needed?
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@reddfoxx Refer to attachment link：
https://www.aliexpress.us/item/3256803830903295.html?spm=a2g0o.productlist.main.51.2d623ca45F44fO&algo_pvid=370776b3-bc3a-44b3-b469-07b7abd5eb71&algo_exp_id=370776b3-bc3a-44b3-b469-07b7abd5eb71-25&pdp_ext_f={"sku_id"%3A"12000027750691599"}&pdp_npi=2%40dis!USD!0.17!0.13!!!!!%40212244c416739165017785791d0685!12000027750691599!sea&curPageLogUid=LiqQEObfPtMi -
Referenced by G george