need current stock untouched sprint rom and some help please

i haven't used odin in years. all of my device knowladge is in htc devices and it just uses a few commands in command window and rest is done on device. my girlfriends note 2 decided to start doing random reboots and night before easter it lit up, shut down, and was done. connecting to charger got me nothing. couldn't get it to reboot, so we switched back to note 4 with dead speaker. today we went to sprint and they plugged it in and it did startup splash screen with "note 2" and just froze there. pull the battery and put it back in and it starts right back up to same screen without even pressing power button. got home and did bootloader (volume up and home key) and it just rolled out failed ........ one right after the other, tried to do factory reset and got the same list of everything failing. i currently have the device in adb sideload and want to try to install stock rom.

I have done countless things to many htc devices, incuding current m9 with marshmellow, s-off, twrp 3.0.0.2, modified software, but this note 2 has never been touched, i only do my own devices.

never rooted, never unlocked bootloader, no odin flags, and i don't know that samesung has simple RUU like htc where i just plug into pc, run RUU.exe and it just updates.

note 4 has dead external speaker and sprint ordered fresh new device today for replacement so it will be what i stick to. note 2 is paid off and has clean esn (it may just become my new play toy for hacking and development with some learning from xda) but i want to see if i can get it going again.

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