[HTC U Ultra Questions & Answers] usmantahir:
Hello,

So my U Ultra was rooted, then unrooted.

Months later, the phone has some sort of software issue causing it to restart (probably a corrupt file)

Now i want to take it back to being a fully unrooted stock.

Please see details below

Fastboot getvar all:

kernel: lk

(bootloader) product: htc_ocedugl

(bootloader) version: 1.0

(bootloader) max-download-size: 1578400000

(bootloader) serialno: FA72F1700260

(bootloader) slot-count: 0

(bootloader) current-slot:

(bootloader) imei: 355167081167528

(bootloader) version-main: 2.19.400.1

(bootloader) boot-mode: download

(bootloader) version-baseband: 2.0.U010051c@80211.2

(bootloader) version-bootloader: 1.0.0.0000

(bootloader) mid: 2PZF20000

(bootloader) cid: HTC__060

The bootloader shows following info:

*** RELOCKED ***

*** FUSED (PRODUCTION)***

htc_ocedugl PVT S-ON

LK-1.0.0.0000

RADIO-2.0.U010051c@80211.2

OpenDSP-v24.0.8996.00007_1206_OCE

OS-2.19.400.1

Feb 13 2018,16:29:19(1026541)

It's an Indian region phone i think, since the ota files i find online with the matching radio reads HTC INDIA

So i've tried the sdcard method as well as fastboot flash zip method, trying with 2 different files:

OTA_OCEAN_NOTE_DUGL_O80_SENSE90GP_MR_HTC_India_SEA_2.19.400.1_2.0.U010051c@80211.2_63.34_release_522885kzkqxuugr4zk0yr5.zip

link: https://androidfilehost.com/?fid=746010030569965797

&

2PZFIMG_OCEAN_NOTE_DUGL_N70_SENSE80GP_HTC_India_SEA_1.62.400.1_Radio_1.0.U010051c@70502_53.34_release_503372_signed_2_4.WWW.GSMDEVELOPERS.COM_GDF@A-1RAJA

link: https://androidfilehost.com/?fid=3700668719832236174

Yes, i renamed it to "2PZFIMG.zip" and placed it on root of the sdcard,

for the OTA file mentioned above, i end up with the following error:

"99 RU_UNKNOWN_FAIL terrible mishap with original ret: 0

99 RU_UNKNOWN_FAIL terrible mishap with original ret: 0

99 RU_UNKNOWN_FAIL terrible mishap with original ret: 0"​

For the 2nd zip, I receive the following error:

"19 RU_MAIN_VER_FAIL os-version in android-info missing or i

19 RU_MAIN_VER_FAIL os-version in android-info missing or i

FAIL19 RU_MAIN_VER_FAIL os-version in android-info missing or i"​

fastboot flash zip concludes with the following error:

"zeeraks-mbp-2:~ zeerakata$ /Users/zeerakata/Documents/android/platform-tools/fastboot flash zip /Users/zeerakata/Documents/android/platform-tools/rom.zip

ERROR: Couldn't create a device interface iterator: (e00002bd)

Invalid sparse file format at header magic

error: write_sparse_skip_chunk: don't care size 904116903 is not a multiple of the block size 4096

Sending sparse 'zip' 1/2 (1048572 KB) error: write_sparse_skip_chunk: don't care size 904116903 is not a multiple of the block size 4096

error: write_sparse_skip_chunk: don't care size 904116903 is not a multiple of the block size 4096

OKAY [ 52.655s]

Writing 'zip' (bootloader) HOSD CL#1026541

(bootloader) ERR lzipv2_init : Cannot open file /dev/fastboot_download_b

(bootloader) xkQ1e

(bootloader) ERR [SD_UPDATE_ERR] update_fb_ZIP_buf: can not find ZIP hea

(bootloader) der

(bootloader) ERR [SD_UPDATE_ERR] sddownload failed: 22

(bootloader) ERR Update zip file failed.

(bootloader) ERR ZIP ERROR, exit read zip loop

(bootloader) ERR ZIP signature checking failed...

(bootloader) Update zip file OK

(bootloader) ERR ZIP ERROR CODE, 22

(bootloader) end@Done

FAILED (remote: '22 RU_HEADER_ERROR ')

fastboot: error: Command failed"​

I'm not a pro at this, but i've been playing around with android rooting and stuff for a while now.

Please help me with this.

Need to go back to stock

UPDATE:

So i downloaded a file with the following title,

2PZFIMG_OCEAN_NOTE_DUGL_O80_SENSE90GP_MR_HTC_India_SEA_2.19.400.1_Radio_2.0.U010051c@80211.2_63.34_release_524957_combined_s

and it is successfully flashed via SDcard method:

I still am stuck on a bootloop, i cant make it past the htc logo, onto the loading screen

PLEASE HELP :(