[8525, TyTN, MDA Vario II, JasJam Software Upgradin] dam:
1.09 to 1.04

ok, what I understood is :

1- you can download from 1.09 to 1.04. ;)

see :

Bootloader

The bootloader is the place where you can change the low-level software parameters and some hardware parameters of the Hermes, change and read the ROM and provides information about it.

The bootloader is invoked by pressing down both the POWER button and SIDE OK together and using the stylus at the same time to press the RESET button at the bottom.

The bootloader version is shown for a short amount of time when booting the device. You'll see "SPL-1.0X"

Versions

* 1.04

There is a bug in bootloader 1.04 wich allows you to flash any ROM without a CID check. You have to be in bootloader mode to use this bug.

It's possible to upgrade the RadioROM. You can even flash a patched RadioROM wich is needed to unlock your device.

* 1.06

The bug from version 1.04 is fixed. Without downgrading to a Shipped ROM with bootloader 1.04 that matches your CID it's not possible to flash a ROM with a different CID.

The RadioROM can't be upgraded. You have to downgrade to bootloader 1.04 to unlock your device.

* 1.09

You can't downgrade to bootloader 1.04 by flashing a Shipped ROM. However imei-check.co.uk is able to downgrade the bootloader.

There was a solution posted on this forum, but it was stolen from imei-check and was removed. If you are not willing to pay you have to wait until another solution is developed.

The RadioROM can't be upgraded. You have to downgrade to bootloader 1.04 to unlock your device.

"There was a solution posted on this forum", the remaining of it is here, what can be shown :

1. Go to Google, search for DownGrade_SPL.rar (rq : does not work anymore)

2. Connect your tytn to PC and wait until activesync completed.

3. Run M3100v3cUnlock.exe. Once you see checking device.... in DOS box and whilte screen on your tytn, close the program (Dos box) immedaitely.

4. Run ROMUpgradeUt.exe and follow the japanese wizard to complete the boot loader downgrade.

5. Reboot your tytn and then put it into bootloader mode agian, you should see SPL-1.04. Great!

6. Download pof's HTC_Hermes_SIM_Unlock_v2a from

ftp://xda:xda@ftp.xda-developers.com...Unlock_v2a.zip

7. Flash the patched radio rom 1.16, then Reboot.

8. Copy HERM_Unlock_v2a.exe a small PPC app pof wrote into your TYTN memory.

9. Open File Explorer, run HERM_Unlock_v2a.exe on your TYTN and wait about 1 minute until it shows up a completed message. Reboot again!

10. Download mtty.exe from

http://wiki.xda-developers.com/uploads/mtty.exe

11. Disable ActiveSync, and then run mtty.exe, choose usb connection; Enter. You should see USB> prompt. Type in: info 2 . When you see 00000000 or SuperCID string. You are safe and ready to upgrade to the latest TYTN 1.35 Rom with bootloader 1.09.

2- BUT the trick is that it is impossible to SIM unlock even if you downgrade :mad: Right now there is no solution, and I don't know when or if there will be. I hope there will be one indeed...

3- you can still change the language, but it is limited in two ways :

for the good news :

http://xdaforums.com/showthread.php?t=281617

for the bad news :

http://xdaforums.com/showthread.php?t=284765

and a good news in process:

http://xdaforums.com/showthread.php?t=284765&page=5

but I don't get exactly how it works...

For more information look around the board, or I will try to retrieve the info.

take care,

I'm looking forward buying the same device :D

dam