here is all the files you need and i am going to give you a step by step guide so you can update your system
so here is step 1 power down your switch and remove the sd card insert the sd card into your pc download the atmosphere 1.9.5 master that i provided extract to a folder on your desktiop once extracted you will see 2 folders 1 named atmosphere and the other named bootloader you will also see a file named hbmenu.nro drag and drop all of these to the root directory of your switch select replace files when prompt comes up once this is done we move to step 2
so here is step 2 download the hekate+ams package 3 zip also provided here and extract it to a folder on your desktop once it is extracted you will again see the 2 folders atmosphere and bootloader again drag and drop these folders to the root directory of your sd card again select replace files you now have your sig patches now on to step 3
step 3 download sys patch 1.5.6 provided here extract to its own folder then again you will see the atmosphere folder and bootloader folder drag and drop to your root directory of your sd card and again select replace files
you have now updated your sys patch module now on to step 4
step 4 download mission control provided below this is to allow native support for most bluetooth controllers extract to its own folder and again you will see the atmosphere folder but this time with a folder called config again drag and drop these folders to your root directory of your sd card now you have updated your mission control now on to step 5
step 5 download fuse.zip provided here extract to its own folder then copy to this file path on your sd card the first folder is bootloader once in this folder select the payloads folder it is in this folder you paste the fuse.bin file after pasting replace file promt will come up select to replace the file you have now updated your fusee,bin which is required for atmosphere now on to step 6
step 6 updating lock pick rcm download the lockpick rcm provided here extract to its own folder and copy the lockpickrcm.bin to the payloads folder that you were just in once this is done you will see again the prompt to relace file go ahead and select it once the process is done we move to step 7
step 7 go to this site
https://github.com/THZoria/NX_Firmware/releases and download the 20.50 firmware for your switch once downloaded extract to its own folder and name the folder firmware 20.50 once done copy this folder to the root of your sd card you will need it later once this is done we move to step 8
step 8 put your sd card back in your switch i am assuming you have an emunand that you boot from but for now you need to boot into stock mode from hekate so when you power on your switch it should boot into hekate once there select launch and select your stock mode once your switch is booted into stock mode go to settings then system and select update system once it finshes updating it will reboot once more boot back into stock mode to make sure everthing worked once you confirm you have updated your stock partition we will move to step 9
step 9 restart your switch and boot to hekate which should be automatic once back in hekate select payloads then select lockpick rcm it will boot into the lockpick rcm once there turn your switch side ways so you can properly read the menu move up and down using the vol + and - buttons on your switch scroll down to dump keys from sysnand press the power button to select once you select it will automaticaly dump the keys you need when it finishes it will say press any button to go back to previouse menu press the power button then at main menu scroll down and select dump amiibo keys once you select it it will auto dump then press any button to go back to main menu at this point you can scroll down and select reboot to hekate once there we go to step 10
step 10 ok so we are now back in hekate if you are running your prated games through an emunand which i recomend because otherwise you will get banned select launch and select emmumc you will now boot into your switch with atmosphere once your switch has booted we can do the last step to updating your system so we go to step 11
step 11 what i want you to do in this step is launch a game well holding down the right button on your switch this should take you to the homebrew menu once there search for and select the app daybreak once daybreak launches it will take you to a prompt that says install or exit select install this will now take you to the root directory of your sd card scroll down and select the frimware 20.50 folder that we put there earlier once selected it will automaticaly validate then select continue you will next see a prompt that sys reset to factory settings and preserve settings i want you to select preserve settings it will then take you to the next prompt saying install fat32 or inststall fat32+exfat you want to select install fat32+ exfat once you select this you will receive a prompt that says ready to begin update select continue and the update should install once it finishes you will recieve a prompt to reboot the system select reboot your system you will now be booted back to hekate in hekate select launch and select emmumc from here you will bott back to your switch emunand at the nintendo switch logo it might take some extra time so just be pationt and it will launch your system once it does congratulations you have fully updated your system i hope this helps you and that it is written in a way that you can easly follow if you have any more questions please dont hesitate to ask