我连备份都没备份。。。。。

引用一下，基本意思就是没备份也可以刷回去。。。。
http://www.tgfcer.com/club/thread-5792841-1-1.html
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DVDkey用新的FW刷机程序2.1版可以找回初始的，自动备份初始状态，无论你之前有没有刷过

OPA - Xtreme v2.1 firmware - Hitachi 7in1 - v32/v36/v40/v46/v47/v58/v59
NEW PACKAGE: "OPA-XTREME-HITACHI-7IN1-V2_1.RAR" 08/07 - 1,022,081 bytes

* ALL NEW XTREME V2.1 FIRMWARE FOR ALL BUILDS OF THE HITACHI DRIVES!
-Now includes "Security Sector Extraction" for all Hitachi Drive
-No other improvements, same as our earlier "Xtreme v1.3", this release just supports SS Extraction within Windows without the need to re-flash your drive back and forth between PLAY & RIP!

* IMPROVED FLASHing & RESTORing SYSTEM
-Windows 2000 support & Windows '64bit compatible
-No freezing due to "firewall" or "ZoneAlarm" programs
-Still recommanded to shut-down programs like "Daemon Tools"
-Can FLASH and/or RESTORE over any release of "firmware"

* Now hard at work the "Stealth" (Xtreme v3.0) firmware for Hitachi
-At least two weeks away, so please don't ask before then
-More news will be released on the boards when it is available

Features:
Here it is, the long awaited World's first Xbox 360 backup firmware modification to boot game backups on Hitachi GDR-3120-L DVD drives!
But, now complete with "Security Sector" Extraction to make your own backup of original Xbox 360 and XBOX 1 games on your system.
Boots all Xtreme Xbox 360 backups
Boots all Xtreme Xbox 1 backups supported by emulator
Boots all Xbox 360 originals
Boots all Xbox 1 originals supported by emulator
Use on Xbox Live at your own risk

我想问一下，刷回去是要干什么？？

呵呵，我的是三星的。。。。。