Updating to nougat issue

[CAMERON1988]

Please, I am very new here, I got the HTC One A9 2PQ93 from my brother, I saw ota update but it was marshmallow security patch with other features being mentioned, my phone version is 1.10.651.1, when I downloaded the update I tried to install it but I was directed to twrp recovery so I couldn't do the update, the custom recovery was installed before my brother gave me the phone..now I want to install stock recovery but couldn't find HTC One A9 sprint recovery.img ...the custom recovery installed is twrp v2.8.7.0 ..now I have successfully flashed super su zip through this version of twrp v2.8.7.0 and gained root access, since I can't remove the custom recovery and install ota updates...then what custom rom can I install using this version of twrp recovery 2.8.7.0.? My phone in download mode shows "Locked" and S-OFF but in boot loader mode it says "UNLOCKED" and S-OFF so please I want to upgrade my phone either with a custom rom or stock rom so I need your help please.
Waiting for reply Sir

Sent from my 2PQ93 using XDA-Developers Legacy app

 

[CAMERON1988]

Can I sideload the update using the adb and fastboot method? ..please I need a reply for 3days now since this post no reply.

Sent from my 2PQ93 using XDA-Developers Legacy app

 

[alray]

Please, I am very new here, I got the HTC One A9 2PQ93 from my brother, I saw ota update but it was marshmallow security patch with other features being mentioned, my phone version is 1.10.651.1, when I downloaded the update I tried to install it but I was directed to twrp recovery so I couldn't do the update, the custom recovery was installed before my brother gave me the phone..now I want to install stock recovery but couldn't find HTC One A9 sprint recovery.img ...the custom recovery installed is twrp v2.8.7.0 ..now I have successfully flashed super su zip through this version of twrp v2.8.7.0 and gained root access, since I can't remove the custom recovery and install ota updates...then what custom rom can I install using this version of twrp recovery 2.8.7.0.? My phone in download mode shows "Locked" and S-OFF but in boot loader mode it says "UNLOCKED" and S-OFF so please I want to upgrade my phone either with a custom rom or stock rom so I need your help please.
Waiting for reply Sir

Sent from my 2PQ93 using XDA-Developers Legacy app

install a nougat sprint ruu that will restore your phone back to stock including the recovery(you'll loose your data so backup first). then you'll be able to install all ota updates for Nougat.
https://forum.xda-developers.com/one-a9/general/wip-ruu-htc-one-a9-t3240344

 

[CAMERON1988]

Thanks

Sent from my 2PQ93 using XDA-Developers Legacy app

 

[CAMERON1988]

To be very honest I am a newbie, I see firmware and RUU, which one is supposed to come first and are these two very important,? why should I flash the RUU and still flash the update? Please don't be offended at my question am just trying to learn....A nougat flashable zip through twrp recovery will be great... please enlighten me on how to differentiate RUU,firmware and ota.. Thanks

Sent from my 2PQ93 using XDA-Developers Legacy app

 

[CAMERON1988]

To be very honest I am a newbie, I see firmware and RUU, which one is supposed to come first and are these two very important,? why should I flash the RUU and still flash the update? Please don't be offended at my question am just trying to learn....A nougat flashable zip through twrp recovery will be great... please enlighten me on how to differentiate RUU,firmware and ota..Can I flash a nougat based custom rom made for hiaeul or unlocked US variant for my hiaewhl, being S-Off and bootloader unlocked? Because I couldn't find a custom rom for my sprint variant...I need your reply Sir..

Sent from my 2PQ93 using XDA-Developers Legacy app

Sent from my 2PQ93 using XDA-Developers Legacy app