How to BACKUP and RECONSTRUCT ROM for MEGA

---

It works, but you must wait after reboot about 30s, don´t panic like me


I take no responsability in any damage on your device. If you're not sure what you're doing, DON'T DO THAT.

All what you need:

• Original ROM (here)
• Custom Rom Flasher (RUU)
• HARDSPL (here)
• Dumped Rom (read below Step 1)
• Folder with programs (attached zip "_FilesNeeded_czdjj.zip")

Step 1 - Dumping your ROM

Use PhoneDump (attached zip)
Run "Partition.Addresses.bat"
Now look into "Partition.Addresses.txt" and if you see something like this (windows path will be different):

Copying d:\_HTC_system\Dump\Phone Dump\itsutils.dll to WCE:\windows\itsutils.dll
Could not update itsutils.dll to the current version, maybe it is inuse?
try restarting your device, or restart activesync
or maybe your device is application-locked.

your device is locked.
Solution: Copy "EnableRapi.cab" (from attached "Phone Dump.zip") into your device and run.
After you make this, you run again "Partition.Addresses.bat" and in txt you see this:

456.63M (0x1c8a0000) FLASHDR
|         124.00k (0x1f000) Part00
|           3.50M (0x380000) Part01
|         118.75M (0x76c0000) Part02
|         334.25M (0x14e40000) Part03
  7.43G (0x1db400000) DSK7:
|           7.42G (0x1db000000) Part00
STRG handles: 
handle#0 8f8a926a   7.42G (0x1db000000)
handle#1 ef789dba 334.25M (0x14e40000)
handle#2 cf857026 118.75M (0x76c0000)
handle#3 8f857002   3.50M (0x380000)
handle#4 4f8a1e1a 124.00k (0x1f000)
disk 8f8a926a
0 partitions, 0 binary partitions
customerid=00000000 uniqueid= 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
disk ef789dba
0 partitions, 0 binary partitions
customerid=00000000 uniqueid= 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
disk cf857026
0 partitions, 0 binary partitions
customerid=00000000 uniqueid= 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
disk 8f857002
0 partitions, 0 binary partitions
customerid=00000000 uniqueid= 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
disk 4f8a1e1a
0 partitions, 0 binary partitions
customerid=00000000 uniqueid= 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

and thats OK.

Now run "Dump My Phone.bat" or use this Tutorial.
We need only Part01.raw (XIP) and Part02.raw (OS)

Step 2 - Original ROM

Original ROM is exe files, extract it with winrar, we need only RUU_signed.nbh.Copy it to folder _FilesNeeded_czdjj from attached files
I downloaded WWE Europe - 1.28.401.4

Step 3 - Reconstructing the ROM

1. Copy to folder _FilesNeeded_czdjj from attached files and rename Part01.raw to xip.bin and Part02.raw to imgfs-new.bin
2. Extract RUU_Signed.nbh

   nbhextract RUU_Signed.nbh

   We need only 04_os.nb
3. Split 04_os.nb

   nbsplit -kaiser 04_os.nb

   Now we have 04_os.nb.payload
4. Now insert the imgfs-new.bin (renamed Part02.raw) to 04_os.nb.payload and create a new file called 04_new-os.nb.payload

   imgfstonb imgfs-new.bin 04_os.nb.payload 04_new-os.nb.payload

5. Insert XIP (renamed Part01.raw) into new-os.nb.payload

   implantxip -xip xip.bin -payload 04_new-os.nb.payload

6. Merge 04_new-os.nb.payload into 04_new-os.nb

   nbmerge -kaiser 04_new-os.nb

7. Start HTCrt, select tab "Rom Builder", select "MEGA" under "Device," enter your version number, change the Language if needed (e.g. CZE for a czech ROM) and select 04_new_os.nb as OS under Firmware contents.
8. Click on Build! button and save your RECONSTRUCTED ROM.

I tested it on my device and I flash my reconstructed rom without problem.

You can use BAT file for simplifying (just run "_reconstruct_czdjj.bat" in attached folder below .




Thanxs for inspiration and their work to:
jockyw2001
efsane
DaveShaw
Johan Kraczmar
and all good people on XDA

===RESERVED===

Dummy question: what's the useful of this tutorial?
If I have the original rom, why I have to merge it with the dumped (original too)?

If you want to test WM 6.5.5 and than you want to go back to original rom (specific language, operator software ... )

Example: There is not Czech language rom to download. If i test 6.5.3 or 6.5.5 ROM from here, there is no way back without this manual. But you must make this backup BEFORE you flash another ROM.
Example 2 : From nbh you can in kitchen make lite version :)

Originally Posted by czdjj

If you want to test WM 6.5.5 and than you want to go back to original rom (specific language, operator software ... )

... in case we can't download the original operator version, I think...

Now I understand, thank's!

Use can go back to original operator rom, just find someone, who has original rom in Mega, dump his Mega and flash yours
Yes, if you have flashed your Mega, you can´t dump from your Mega original Rom (its overwritten)
Sorry for my english

(0409) You are the best!!!! I new it before that you will be successful !!!!!
Congratulation and the best for future work!!!!!!

(0405) Gratuluji, tutorial je krásně přehledný a srozumitelný.Díky moc !!!!!

Originally Posted by czdjj

Step 3 - Reconstructing the ROM

Hey czdjj, thanks a lot / děkuji for your work! I personally don't really need this, but I am sure this helps a lot of people who have an original ROM which is not (yet) available for download as exe or nbh. Thos people might be not willing to try other ROMs, unless they have a way for backup. Well, this here is the way

I would suggest to rename the thread to something like "How to Backup your ROM", so that people who don't immediately know why they would want to reconstruct a dumped ROM get the idea, and understand how helpful this is

By the way, maybe a very dumb question. Does this backup "only" the base ROM, or does this operation do a complete backup, including all modifications that you did so far (installed programs, changed settings, added ringtones, saved messages, etc.)?

to yellowfever:
en: it is only original ROM (after HR), doesn´t include personal settings.
cze: je to pouze romka od vyrobce, original, bez osobniho nastaveni

to. Johan:
en: maybe czech WM 6.5.5? :)))
cze: ze bychom udelali ceskou 6.5.5?

Maybe error

---

I think there is an error in point 4.

"implantxip -xip xip.bin -payload 04_new-os.nb.payload"

04_new-os.nb.payload still does not exists, will be created in point 5!

The right point 4 is:

implantxip -xip xip.bin -payload 04_os.nb.payload

Could you check it?