boards: nvidia: jetson: update readme

Signed-off-by: Aleksandrov Dmitriy <goodmobiledevices@gmail.com>

boards/nvidia/jetson/README.md

@@ -1,10 +1,10 @@
 # jetson-vanilla-boot
 
-In L4T version 23.5, all Jetson Nano versions have the ability to move boot flow partitions to qspi. We use this to run any possible EFI-enabled Linux distributions intact. For jetson nano, we build the kernel dtb and u-boot from source and flash it to qspi.
+In L4T version 23.5, all Jetson Nano versions have the ability to move boot flow partitions to qspi. We use this to run any possible EFI-enabled Linux distributions, but Nvidia Jetson from BSP package has kernel, dtb and u-boot very different from vanilla versions. We have to change them to vanilla to be able to run vanilla kernel based operating systems like EVE.
 
 ## Supported
 
-* Jetson nano developer's kit with 4GB of ram.
+* Jetson nano developer's kit with 4GB of ram. [p3450-0000]
 
 ## Dependencies
 
@@ -23,25 +23,25 @@ In L4T version 23.5, all Jetson Nano versions have the ability to move boot flow
 
 ```sh
 ./get-bsp 210
-./get-bsp 186
 ```
 
 ### Switch to vanilla
 
 We can set u-boot and kernel dtb versions.
 
 ```sh
-./make-u-boot v2021.01
-./make-kernel-dtbs 5.4.51
+./make-u-boot v2021.04
+./make-kernel-dtbs 5.10.7
 ```
 
 ### Switch jetson to recovery mode
 
 For example jetson nano 4GB.
 
 1) Connect FC REC pin with GND pin.
-2) Connect Jetson nano micro usb to PC usb port. (Pay attention to the power supply on the USB port of the computer)
-3) Enter lsusb command on PC, we can see
+2) Switch power supply to micro usb. (We need open J48 Jumper)
+3) Connect Jetson nano micro usb to PC usb port. (Pay attention to the power supply on the USB port of the computer)
+4) Enter lsusb command on PC. We must see NVIDIA Corp. APX device, example:
 
 ```sh
 Bus 001 Device 005: ID 0955:7f21 NVIDIA Corp. APX