Update device description

README.cn.md

@@ -19,7 +19,7 @@
 | s905x | [HG680P](https://tokopedia.link/HbrIbqQcGgb), [B860H](https://www.zte.com.cn/global/products/cocloud/201707261551/IP-STB/ZXV10-B860H) | 5.4.* | armbian_aml_s905x_*.img |
 | s905w | [X96-Mini](https://tokopedia.link/ro207Hsjqeb), [TX3-Mini](https://www.gearbest.com/tv-box/pp_009748238474.html) | 5.4.* | armbian_aml_s905w_*.img |
 
-💡提示：当前 ***`s905`*** 的盒子只能在 `TF/SD/USB` 中使用，其他型号的盒子同时支持写入 `EMMC` 中使用。当前 ***`s905x`*** 和 ***`s905w`*** 系列的盒子只支持使用 `5.4` 内核，不能使用 5.10 或更高版本，请在编译时指定替换内核。其他型号的盒子可任选内核版本使用。
+💡提示：当前 ***`s905`*** 的盒子只能在 `TF/SD/USB` 中使用，其他型号的盒子同时支持写入 `EMMC` 中使用。当前 ***`s905x`*** 和 ***`s905w`*** 系列的盒子只支持使用 `5.4` 内核，不能使用 5.10 或更高版本，请在编译时指定替换内核。其他型号的盒子可任选内核版本使用。每个盒子的 dtb 和 u-boot 请查阅[说明](build-armbian/amlogic-u-boot/README.md)。
 
 ## 安装及升级 Armbian 的相关说明
 

README.md

@@ -19,7 +19,7 @@ The latest version of the Armbian firmware can be downloaded in [Releases](https
 | s905x | [HG680P](https://tokopedia.link/HbrIbqQcGgb), [B860H](https://www.zte.com.cn/global/products/cocloud/201707261551/IP-STB/ZXV10-B860H) | 5.4.* | armbian_aml_s905x_*.img |
 | s905w | [X96-Mini](https://tokopedia.link/ro207Hsjqeb), [TX3-Mini](https://www.gearbest.com/tv-box/pp_009748238474.html) | 5.4.* | armbian_aml_s905w_*.img |
 
-💡Tip: The current box of ***`s905`*** can only be used in `TF/SD/USB`, and other types of boxes can also be used in `EMMC` at the same time. The ***`s905x`*** and ***`s905w`*** boxs currently only support `5.4` kernels, Cannot use kernel version 5.10 and above. Please add kernel substitution variables when compiling these two models of devices. Other devices can be freely selected.
+💡Tip: The current box of ***`s905`*** can only be used in `TF/SD/USB`, and other types of boxes can also be used in `EMMC` at the same time. The ***`s905x`*** and ***`s905w`*** boxs currently only support `5.4` kernels, Cannot use kernel version 5.10 and above. Please add kernel substitution variables when compiling these two models of devices. Other devices can be freely selected. Please refer to the [instructions](build-armbian/amlogic-u-boot/README.md) for dtb and u-boot of each device.
 
 ## Install to EMMC and update instructions