[Q] oops! I've made a mess ...... topic

M7 was badly misbehaving. Couldn't install apps from the drawer (to the home page) or from the home page directly. I get the vibration feedback and that's it.
There have been other issues as well.
I'd been on the OTA 4.4.3, but some app must have poisoned the phone.
In any case formatted data and wiped caches.
Have TWRP 2.8.02 installed. Unlocked and rooted.
I can get to TWRP or Fastboot with no issues.
But Sideload, push nor fastboot will take my OTArom.zip.

FAILED (remote: 24 parsing android-info fail) was the error from Fastboot flash zip rom.zip
sideload seemed to pass the rom but got "' error in binary update"' in a couple secs after the sideload is done.

I'd rather install OEM instead of a TWRP back-up that is loaded with apps that might have caused the issues. But so far ......

I'm on a Mac so I can't run .exe.

thanks.

fastboot getvar all
(bootloader) version: 0.5
(bootloader) version-bootloader: 1.57.0000
(bootloader) version-baseband: 4T.28.3218.04
(bootloader) version-cpld: None
(bootloader) version-microp: None
(bootloader) version-main:
(bootloader) version-misc: PVT SHIP S-OFF
(bootloader) serialno: FA##########
(bootloader) imei: #############
(bootloader) meid: 00000000000000
(bootloader) product: m7_ul
(bootloader) platform: HBOOT-8064
(bootloader) modelid: PN0713000
(bootloader) cidnum: T-MOB010
(bootloader) battery-status: good
(bootloader) battery-voltage: 4305mV
(bootloader) partition-layout: Generic
(bootloader) security: off
(bootloader) build-mode: SHIP
(bootloader) boot-mode: FASTBOOT
(bootloader) commitno-bootloader: dirty-6d8a0b9b
(bootloader) hbootpreupdate: 11
(bootloader) gencheckpt: 0