If you made a stock nandroid backup please share it here so users have a place to collect one if they are in need ! If you can't host it at least for a longer period of time i can take over the nandroid backup and host it myself.
When you have a stock backup ready you can upload it to MEGA or Android File Host for free :
Android File Host
How do i backup the stock HTC recovery ?
Boot the custom recovery, preferably with Philz touch recovery as it will back up the stock recovery for sure, you need the following command to boot it and not flash it over the stock recovery :
fastboot boot recovery_filename.img
Then make a full nandroid backup, the stock recovery is located inside the backup folder
How do i find the correct backup here ?
perform the following fastboot commands to determine the correct one :
fastboot getvar version-main
fastboot oem readcid
fastboot getvar all (if you post this one please delete the serial and IMEI !)
Take the main version number and CID and check if it exists in the collection below ! If it doesn't you can always make a request here.
The WWE (World Wide English) nandroid backups have the same main version build numbers. All these nands have the main number that is based on the x.xx.401.xx build and all these CIDS are compatible
So if you are looking for a 401 main nandroid backup you can pick one of these CIDs, restore it and flash back the stock recovery then perform OTA if you wish/needed (do NOT relock the bootloader before you have done at least 1 official OTA !!!)
I uploaded the recovery with it's original name at the end so when it says "Stock recovery 1.54.401.5 recovery.img" it's original name is recovery.img
This one can be flashed with the following command : fastboot flash recovery recovery.img
when it's named "Stock recovery 1.54.401.5 recovery.emmc.win" it's original name is recovery.emmc.win
this one can be flashed with the following command : fastboot flash recovery recovery.emmc.win
For sprint devices go here
Stock backups and ota's
For some german back-up's go here
German stock backups
Some more very helpfull threads here on XDA
[GUIDE] Everything Explained
[INDEX][REPO][AIO] HTC ONE (M8) - ROMs | Kernels | MODs | Recoveries
VomerGuides [M8]: Bootldr Unlock, S-OFF, SuperCID, Firmware Upgrade & Custom Recovery
[GUIDE] Return your M8 to 100% Stock
HTC One firmware collection for different CID/MID