[Q] Help In Updating To 4.3

Hi pplz... I'm having a problem updating my Butterfly x920D to the latest OTA 4.3 (SV: 3.15.707.4). I've read quite a number of threads over here but am confused about it. Pls help in assisting me. Below are my phone's details:

Model: Butterfly x920d
Android Version: 4.2.2
HTC Sense: 5.0
Software number: 2.33.707.3

*** TAMPERED ***
*** UNLOCKED ***
DELUXE_UB1 PVT SHIP S-ON RH
HBOOT-1.54.0000
RADIO-3A.28.306.09
OpenDSP-V10.120.274.0520
OS-2.33.707.3
eMMC-boot 2048MB
Aug 16 2013

I have:

1. Installed TWRP (but S-ON)
2. Downloaded the latest OTA (OTA_DLXB1_U_JB43_SENSE55_MR_hTC_Asia_WWE_3.15.707.4-2.33.707.3_release_349223iyhl6ppxepz4q8jp.exe)

I understand that I need to flash back to the original ROM in order for me to flash the update.

Question:
1. Which ROM should I flash back to?
i) DLXB1_U_JB_50_hTC_Asia_TW_2.28.709.3_V0.0.zip
https://docs.google.com/file/d/0B7MPpG7R8I4yUnV6a25MVVV1X1U/edit?pli=1

ii) DLXB1_U_JB43_SENSE55_MR_hTC_Asia_TW_3.12.709.6_V0. 0.zip
http://sync.hamicloud.net/_oops/nenebear59/z74

2. Once I flash it back to stock, the TWRP will be gone and I will need to reinstall again?

Thank you so much for the replies in advance.

Bassie39 said:

Better use backup to go back to stock Rom 4.2.2 then flash stock boot and recovery and install ota to 4.3

Sent from my HTC Butterfly using xda app-developers app

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Hi Bassie39. U mean I backup my current ROM 4.2.2 using TWRP and flash stock boot and do a recovery from my backed up ROM 4.2.2?
Can you pls point me to the stock boot?

Thanks.

Bassie39 said:

No backup of stock Rom always backup stock Rom before change anything. If you don't have stock backup try to find someone with same model en sw version and make backup of it. Maybe try searching internet

Sent from my HTC Butterfly using xda app-developers app

Click to expand...

Click to collapse

Ok. Thanks. Will search around.