We help IT Professionals succeed at work.

We've partnered with Certified Experts, Carl Webster and Richard Faulkner, to bring you two Citrix podcasts. Learn about 2020 trends and get answers to your biggest Citrix questions!Listen Now


Sonicwall TZ 150: unable to get image to boot

jpmonn asked
Medium Priority
Last Modified: 2012-05-06
I have a TZ 150 which I have lost the user name and password. I went to mysonicwall and downloaded the sig file sw_tz150_s_eng_3.1.5.0.sig Went to safemode and uploaded my new firmware. I then click on Uploaded Firmware to Factory Default settings.

I get the error.
Status: Warning! Invalid firmware boot option.

Any ideas??

Watch Question

I would guess the upload didn't work properly - can you try it again?

Otherwise, you may have a hardware fault.

Not the solution you were looking for? Getting a personalized solution is easy.

Ask the Experts
I was finally able to find the answer on Sonicwall's forums. It seems that early versions had a bug in the boot ROM that prevented the firmware from being changed through Safe Mode on more modern browsers, the only way to fix this is to request an RMA and have Sonicwall deal with it.

Arooga! Now you come to mention it I recall a browser-compatibility issue before - but it reported an upload fault, ISTR, not a boot fail.
Well, actually to get around this problem you need to have a machine with IE6 installed. For some reason connecting using Firefox, Safari, IE7, 8 or whatever creates this error.

I did a fresh install of Windows XP on a test machine and kept IE6 as the browser, worked perfectly. Kind of a pain, but this worked for me and I verified it as the fix through several other sources.

Note that you press the rest button until the unit's wrench light begins to flash. You then configure a workstation with Windows and IE6 with the address and a subnet of

Connect to the TZ-170 at - then select the option to boot with factory default settings. The default user is: admin and the default password is password.

Rather than do a fresh install to get IE 6, you can use the web browser emulator at http://spoon.net/browsers    There is an IE 6 emulator that works perfectly to boot to the default settings!
Access more of Experts Exchange with a free account
Thanks for using Experts Exchange.

Create a free account to continue.

Limited access with a free account allows you to:

  • View three pieces of content (articles, solutions, posts, and videos)
  • Ask the experts questions (counted toward content limit)
  • Customize your dashboard and profile

*This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.


Please enter a first name

Please enter a last name

8+ characters (letters, numbers, and a symbol)

By clicking, you agree to the Terms of Use and Privacy Policy.