My steps are exactly like the video above except the nandpart, because I cannot even reach there.
I got the error below after restoring nand backup:
View attachment 169113
Failed to decrypt Package2 header (master key revision 4)
read this short written text guide
1. Backup the console's NAND using Hekate
2. Get your Biskey with TegraRcmGUI
3. Remove the eMMC module
4. Install the new upgraded eMMC module
5. Restore the NAND
6. Boot it, the console should boot normally
7. Send memloader payload with a dongle
8. Make a Gparted live USB drive with Rufus, boot it
9. Boot Gparted, connect the console to the computer, and refresh the Partition.
10. Fix the GPT if prompted
11. Turn off the console, send memloader with windows TegraRcmGUI
12. Download Nandpart
13. Install Python, and open Command Prompt as an administrator, run the command, (see my previous post about installing Nandpart)
14. Run Nandpart, select physical drive, Resize it.
15. Run Hacdiskmount, select physical drive, press Yes if prompted about emmc, select primary
16. Mount the USER partition with, use the biskey 3
17. copy the content of. USER partition to the computer
18.format the mounted drive using fat32format
19. copy back the content of the USER partition
20. Reboot ur console
21. Done