Changing hboot htc one mini

[homestd]

After reading miles and miles of these forums over the last couple of years, I've finally decided to ask my own questions. I really like the mini and will use it until I can get a really good deal on a mini 2.

OK...my question is this: Can the mini run hboot 2.16? I'm on mini no. 3 as I usually buy them real cheap and try to fix them (it's an education in itself,but I'm brave and have the time) and I know they're problematic. My current phone is stock and freshly unlocked, s-on android 4.4.2. If it won't do 2.16 is there an eng hboot to be had anywhere? This is probably the first of many posts and thanks in advance.

(bootloader) version: 0.5
(bootloader) version-bootloader: 2.22.0000
(bootloader) version-baseband: N/A
(bootloader) version-cpld: None
(bootloader) version-microp: None
(bootloader) version-main: 4.13.502.3
(bootloader) version-misc: PVT SHIP S-ON
(bootloader) serialno: HT38MWA02489
(bootloader) imei: 356482050419928
(bootloader) meid:
(bootloader) product: m4_ul
(bootloader) platform: HBOOT-8930
(bootloader) modelid: PO5822000
(bootloader) cidnum: CWS__001
(bootloader) battery-status: good
(bootloader) battery-voltage: 4180mV
(bootloader) partition-layout: Generic
(bootloader) security: on
(bootloader) build-mode: SHIP
(bootloader) boot-mode: FASTBOOT
(bootloader) commitno-bootloader: dirty-0e1af350
(bootloader) hbootpreupdate: 11
(bootloader) gencheckpt: 0