[HTC One A9] xdagee:
Unfortunately I havent recieved any OTA update till now.

Currently on 4.28.502.2 firmware, with S-ON i have relocked bootloader & unrooted.

If you by chance come across it, can you pls make it availabe here.

Thanks in advance :)

Great, Successfully decrypted!

Thank you.

reached my limit like per day. would give all to you the next day. :)

Welcome to the RUU extraction and decryption script!

Extracting temporary files...
Extracting rom zip files...
Extracting rom.zip...done.
Extracting android-info.txt...done.
Cleaning up...
Done!

Extracting ZIP files
LargeZip format detected, using ruuveal
ruuveal
-------

Large zip format detected containing 6 zipfile(s)
Dumped (copied) zip file to: 01_dmp.zip
Dumped (copied) zip file to: 02_dmp.zip
Dumped (copied) zip file to: 03_dmp.zip
Dumped (copied) zip file to: 04_dmp.zip
Dumped (copied) zip file to: 05_dmp.zip
Dumped (copied) zip file to: 06_dmp.zip
Finished: Successfully extracted zip files to '/mnt/c/Users/Wofa/Downloads/Universal_HTC_Decrypt_Tool-v2.0.0/working/extract'

Model ID found by extracting android-info.txt from RUU. Model ID identified as: 0P6B

Looking for keyfile: 0P6B_keyfile_6.bin

Attempting to find suitable keyfile

Locating 'AIK-Linux'

Encrypted zip to be used for testing: '01_dmp.zip'

Attempting to extract hboot/hosd
Archive: 01_dmp.zip
warning [01_dmp.zip]: 128 extra bytes at beginning or within zipfile
(attempting to process anyway)
file #1: bad zipfile offset (local header sig): 313
(attempting to re-compensate)
file #1: bad zipfile offset (local header sig): 313

Archive: 02_dmp.zip
warning [02_dmp.zip]: 128 extra bytes at beginning or within zipfile
(attempting to process anyway)
caution: filename not matched: hboot*

Archive: 03_dmp.zip
warning [03_dmp.zip]: 128 extra bytes at beginning or within zipfile
(attempting to process anyway)
caution: filename not matched: hboot*

Archive: 04_dmp.zip
warning [04_dmp.zip]: 128 extra bytes at beginning or within zipfile
(attempting to process anyway)
caution: filename not matched: hboot*

Archive: 05_dmp.zip
warning [05_dmp.zip]: 128 extra bytes at beginning or within zipfile
(attempting to process anyway)
caution: filename not matched: hboot*

Archive: 06_dmp.zip
warning [06_dmp.zip]: 128 extra bytes at beginning or within zipfile
(attempting to process anyway)
caution: filename not matched: hboot*

6 archives had fatal errors.
Archive: 01_dmp.zip
warning [01_dmp.zip]: 128 extra bytes at beginning or within zipfile
(attempting to process anyway)
caution: filename not matched: hosd*

Archive: 02_dmp.zip
warning [02_dmp.zip]: 128 extra bytes at beginning or within zipfile
(attempting to process anyway)
caution: filename not matched: hosd*

Archive: 03_dmp.zip
warning [03_dmp.zip]: 128 extra bytes at beginning or within zipfile
(attempting to process anyway)
caution: filename not matched: hosd*

Archive: 04_dmp.zip
warning [04_dmp.zip]: 128 extra bytes at beginning or within zipfile
(attempting to process anyway)
caution: filename not matched: hosd*

Archive: 05_dmp.zip
warning [05_dmp.zip]: 128 extra bytes at beginning or within zipfile
(attempting to process anyway)
caution: filename not matched: hosd*

Archive: 06_dmp.zip
warning [06_dmp.zip]: 128 extra bytes at beginning or within zipfile
(attempting to process anyway)
caution: filename not matched: hosd*

6 archives had fatal errors.
Could not extract hboot/hosd, trying known keys instead...

Testing keyfile (0P3P_keyfile_4.bin)...
ruuveal
-------

Processing ZIP... 32768/58714563
WARNING: ruuveal failed!

Testing keyfile (0P6B_keyfile_4.bin)...
ruuveal
-------

Processing ZIP... 32768/58714563
WARNING: ruuveal failed!

Testing keyfile (0PAJ_keyfile_1.bin)...
ruuveal
-------

Processing ZIP... 32768/58714563
WARNING: ruuveal failed!

Testing keyfile (0PCV_keyfile_1.bin)...
ruuveal
-------

Processing ZIP... 32768/58714563
WARNING: ruuveal failed!

Testing keyfile (0PFH_keyfile_2.bin)...
ruuveal
-------

Processing ZIP... 32768/58714563
WARNING: ruuveal failed!

Testing keyfile (0PGZ_keyfile_1.bin)...
ruuveal
-------

Processing ZIP... 32768/58714563
WARNING: ruuveal failed!

Testing keyfile (0PJA_keyfile_2.bin)...
ruuveal
-------

Processing ZIP... 32768/58714563
WARNING: ruuveal failed!

Testing keyfile (0PM9_keyfile_1.bin)...
ruuveal
-------

Processing ZIP... 32768/58714563
WARNING: ruuveal failed!

Testing keyfile (0PN7_keyfile_1.bin)...
ruuveal
-------

Processing ZIP... 32768/58714563
WARNING: ruuveal failed!

Testing keyfile (0PN7_keyfile_4.bin)...
ruuveal
-------

Processing ZIP... 32768/58714563
WARNING: ruuveal failed!

Testing keyfile (0PN7_keyfile_5.bin)...
ruuveal
-------

Processing ZIP... 32768/58714563
WARNING: ruuveal failed!

Testing keyfile (2PQ9_keyfile_1.bin)...
ruuveal
-------

Processing ZIP... 32768/58714563
WARNING: ruuveal failed!

Testing keyfile (m8_keyfile_1.bin)...
ruuveal
-------

Processing ZIP... 32768/58714563
WARNING: ruuveal failed!

Testing keyfile (m8_keyfile_6.20.654.3.bin)...
ruuveal
-------

Decrypted RUU (zip) written to: tmp/tmpzip.zip

keyfile passed ruuveal, running 2nd test...

Archive: tmp/tmpzip.zip
testing: android-info.txt OK
testing: hboot_signedbyaa.img OK
testing: sbl1-8974AB-1.img OK
testing: sbl1-8974AB-2.img OK
testing: sbl1-8974AA-1.img OK
testing: sdi.img OK
testing: rpm.img OK
testing: boot_signed.img OK
testing: recovery_signed.img OK
testing: adsp.img OK
testing: wcnss.img OK
testing: radio.img OK
testing: rcdata.img OK
testing: tz.img OK
testing: pg2fs_spcustom.img OK
testing: sensor_hub.img OK
testing: tp_SYN3508.img OK
testing: tp_SYN3528.img OK
testing: splash1.nb0 OK
No errors detected in compressed data of tmp/tmpzip.zip.

INFO: keyfile passed all tests

Finished: successfully found decryption key, copied to '/mnt/c/Users/Wofa/Downloads/Universal_HTC_Decrypt_Tool-v2.0.0/tools/keyfiles/new-keyfile.bin'

New keyfile created. Using keyfile: 0P6B_keyfile_6.bin

Decrypting ZIP files

Decrypting 01_dmp.zip
Encrypted zip detected, running ruuveal...
ruuveal
-------

Decrypted RUU (zip) written to: /mnt/c/Users/Wofa/Downloads/Universal_HTC_Decrypt_Tool-v2.0.0/working/decrypt/decrypted_zips/dec_01_dmp.zip

Decrypting 02_dmp.zip
Encrypted zip detected, running ruuveal...
ruuveal
-------

Decrypted RUU (zip) written to: /mnt/c/Users/Wofa/Downloads/Universal_HTC_Decrypt_Tool-v2.0.0/working/decrypt/decrypted_zips/dec_02_dmp.zip

Decrypting 03_dmp.zip
Encrypted zip detected, running ruuveal...
ruuveal
-------

Decrypted RUU (zip) written to: /mnt/c/Users/Wofa/Downloads/Universal_HTC_Decrypt_Tool-v2.0.0/working/decrypt/decrypted_zips/dec_03_dmp.zip

Decrypting 04_dmp.zip
Encrypted zip detected, running ruuveal...
ruuveal
-------

Decrypted RUU (zip) written to: /mnt/c/Users/Wofa/Downloads/Universal_HTC_Decrypt_Tool-v2.0.0/working/decrypt/decrypted_zips/dec_04_dmp.zip

Decrypting 05_dmp.zip
Encrypted zip detected, running ruuveal...
ruuveal
-------

Decrypted RUU (zip) written to: /mnt/c/Users/Wofa/Downloads/Universal_HTC_Decrypt_Tool-v2.0.0/working/decrypt/decrypted_zips/dec_05_dmp.zip

Decrypting 06_dmp.zip
Encrypted zip detected, running ruuveal...
ruuveal
-------

Decrypted RUU (zip) written to: /mnt/c/Users/Wofa/Downloads/Universal_HTC_Decrypt_Tool-v2.0.0/working/decrypt/decrypted_zips/dec_06_dmp.zip

Unzipping decrypted zips
Archive: decrypted_zips/dec_01_dmp.zip
inflating: decrypted_all/android-info.txt
inflating: decrypted_all/hboot_signedbyaa.img
inflating: decrypted_all/sbl1-8974AB-1.img
inflating: decrypted_all/sbl1-8974AB-2.img
inflating: decrypted_all/sbl1-8974AA-1.img
inflating: decrypted_all/sdi.img
inflating: decrypted_all/rpm.img
inflating: decrypted_all/boot_signed.img
inflating: decrypted_all/recovery_signed.img
inflating: decrypted_all/adsp.img
inflating: decrypted_all/wcnss.img
inflating: decrypted_all/radio.img
inflating: decrypted_all/rcdata.img
inflating: decrypted_all/tz.img
inflating: decrypted_all/pg2fs_spcustom.img
inflating: decrypted_all/sensor_hub.img
inflating: decrypted_all/tp_SYN3508.img
inflating: decrypted_all/tp_SYN3528.img
inflating: decrypted_all/splash1.nb0

Archive: decrypted_zips/dec_02_dmp.zip
inflating: decrypted_all/system_1.img
inflating: decrypted_all/android-info-1.txt

Archive: decrypted_zips/dec_03_dmp.zip
inflating: decrypted_all/system_2.img
inflating: decrypted_all/android-info-2.txt

Archive: decrypted_zips/dec_04_dmp.zip
inflating: decrypted_all/system_3.img
inflating: decrypted_all/android-info-3.txt

Archive: decrypted_zips/dec_05_dmp.zip
inflating: decrypted_all/system_4.img
inflating: decrypted_all/android-info-4.txt

Archive: decrypted_zips/dec_06_dmp.zip
inflating: decrypted_all/dzdata_16g.hdr
inflating: decrypted_all/dzdata_16g.img
inflating: decrypted_all/dzdata_32g.hdr
inflating: decrypted_all/dzdata_32g.img

6 archives were successfully processed.

Move system img files to system folder
‘decrypted_all/system_1.img’ -> ‘decrypted_system/system_1.img’
‘decrypted_all/system_2.img’ -> ‘decrypted_system/system_2.img’
‘decrypted_all/system_3.img’ -> ‘decrypted_system/system_3.img’
‘decrypted_all/system_4.img’ -> ‘decrypted_system/system_4.img’
Finished: Successfully decrypted RUU to '/mnt/c/Users/Wofa/Downloads/Universal_HTC_Decrypt_Tool-v2.0.0/working/decrypt'

/mnt/c/Users/Wofa/Downloads/Universal_HTC_Decrypt_Tool-v2.0.0/working/decrypt/decrypted_system
/mnt/c/Users/Wofa/Downloads/Universal_HTC_Decrypt_Tool-v2.0.0/out

Attempting to create system.img
Multi-part system images
Sparse Header not found, using simple concatenate
Please be patient, this can take several minutes...finished.
Testing system.img...
e2fsck 1.42.9 (4-Feb-2014)
ext2fs_check_if_mount: Can't check if filesystem is mounted due to missing mtab file while determining whether /mnt/c/Users/Wofa/Downloads/Universal_HTC_Decrypt_Tool-v2.0.0/out/system.img is mounted.
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
/mnt/c/Users/Wofa/Downloads/Universal_HTC_Decrypt_Tool-v2.0.0/out/system.img: 3345/172032 files (0.0% non-contiguous), 608314/688128 blocks
Finished: Successfully created system.img in '/mnt/c/Users/Wofa/Downloads/Universal_HTC_Decrypt_Tool-v2.0.0/out'

Renaming and moving files...

Rom.zip has been renamed for your device.

Boot image extracted from firmware.zip. boot.img & system.img can be used as base for building a new ROM.

Script complete! Files can be found in the 'out' folder. Enjoy your decrypted system!

Update:

got the firmware from here