[helpfull_hkt]

Originally Posted by jamesjerss

Try this

PN07IMG_M7_U_K443_SENSE60_MR_HTC_LA_SPA_6.15.599.1 01_Radio_4T.28
.3218.04_10.33E.1718.01D_release_388532_signed.zip

C:\adb>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: 6.15.599.110
(bootloader) version-misc: PVT SHIP S-ON
(bootloader) serialno: HT35SW909542
(bootloader) imei: 354435054318555
(bootloader) meid: 00000000000000
(bootloader) product: m7_u
(bootloader) platform: HBOOT-8064
(bootloader) modelid: PN0711000
(bootloader) cidnum: HTC__332
(bootloader) battery-status: good
(bootloader) battery-voltage: 3744mV
(bootloader) partition-layout: Generic
(bootloader) security: on
(bootloader) build-mode: SHIP
(bootloader) boot-mode: FASTBOOT
(bootloader) commitno-bootloader: dirty-6d8a0b9b
(bootloader) hbootpreupdate: 11
(bootloader) gencheckpt: 0
all: Done!
finished. total time: 0.113s

C:\adb>fastboot devices
HT35SW909542 fastboot

C:\adb>fastboot oem rebootRUU
...
(bootloader) Start Verify: 3
OKAY [ 0.037s]
finished. total time: 0.039s

C:\adb>fastboot flash zip PN07IMG.zip
target reported max download size of 1514139648 bytes
Invalid sparse file format at header magi
error: write_sparse_skip_chunk: don't care size 84837331 is not a multiple of th
e block size 4096
sending sparse 'zip' (1478648 KB)...
error: write_sparse_skip_chunk: don't care size 84837331 is not a multiple of th
e block size 4096
error: write_sparse_skip_chunk: don't care size 84837331 is not a multiple of th
e block size 4096
OKAY [154.834s]
writing 'zip'...
(bootloader) signature checking...
FAILED (remote: 12 signature verify fail)
finished. total time: 318.535s