Originally Posted by Pirateghost

if you have boot.img in the same folder as fastboot.exe, then no, just open a command prompt where fastboot.exe is, and run the command
fastboot flash boot boot.img

Oh okay, that sounds easier

Originally Posted by dudeluv

Now I cannot figure out how to flash that boot image. I know I am suppose to extract the boot.img out of the zip, tried flashing it in HBoot, but didn't see it, This tool found it but warned me not to flash it.

Since we are in the Flash Image GUI thread, I feel inclined to answer the question regarding the application, Flash Image GUI.

There are a handful of warnings in the application because the HTC EVO 3D released in August of 2011 had this same HTC unlock method and I've been assisting people now for 6 months. There a handful of pitfalls which confuse many users and result in errors on their device. If you carefully read the warnings and follow the directions, you will prevent the common pitfalls and known issues.

1) This tool will warn you, but the warning doesn't say to NOT flash, it only warns you that you will be missing kernel modules if you ONLY flash the boot.img.

2) If you're wanting to load a ROM, as mentioned, select the whole ROM .zip file from Flash Image GUI. Flash Image GUI will handle all the logistics by scanning the file, locating the modules and kernel, and loading both of this. Make sure, after flashing the ROM .zip file in Flash Image GUI, the same ROM .zip file is flashed from recovery mode. Recovery mode will install the "system" portion of the ROM .zip while Flash Image GUI installs the "kernel" portion of the ROM .zip. If both portions are not loaded, many times the device will not boot.

3) When using Flash Image GUI, you don't need to extract the boot.img. It is better to select the whole kernel .zip file. The reason why is whenever you flash a kernel, boot.img or zImage, you MUST flash the accompanying modules, including WiFi. If not, most of the time, Wifi will NOT work.

If you find a warning to be incomplete or misguiding, please post up at least a portion of the exact text you see. I'm more than happy to revisit and working on improving wording but is hard for me to understand mis communications w/o exact feedback!

Let me explain why there is the warning for only flashing the boot.img. The modules (WiFi, etc) must match the kernel as they are compiled/setup at the same time. If the kernel mismatches with the modules, then the modules will not work. This is the main reason why there are posts saying, "Help, my Wifi stopped working".

Hope that helps clarify any confusion! Appreciate the support!

Originally Posted by joeykrim

Since we are in the Flash Image GUI thread, I feel inclined to answer the question regarding the application, Flash Image GUI.

There are a handful of warnings in the application because the HTC EVO 3D released in August of 2011 had this same HTC unlock method and I've been assisting people now for 6 months. There a handful of pitfalls which confuse many users and result in errors on their device. If you carefully read the warnings and follow the directions, you will prevent the common pitfalls and known issues.

1) This tool will warn you, but the warning doesn't say to NOT flash, it only warns you that you will be missing kernel modules if you ONLY flash the boot.img.

2) If you're wanting to load a ROM, as mentioned, select the whole ROM .zip file from Flash Image GUI. Flash Image GUI will handle all the logistics by scanning the file, locating the modules and kernel, and loading both of this. Make sure, after flashing the ROM .zip file in Flash Image GUI, the same ROM .zip file is flashed from recovery mode. Recovery mode will install the "system" portion of the ROM .zip while Flash Image GUI installs the "kernel" portion of the ROM .zip. If both portions are not loaded, many times the device will not boot.

3) When using Flash Image GUI, you don't need to extract the boot.img. It is better to select the whole kernel .zip file. The reason why is whenever you flash a kernel, boot.img or zImage, you MUST flash the accompanying modules, including WiFi. If not, most of the time, Wifi will NOT work.

If you find a warning to be incomplete or misguiding, please post up at least a portion of the exact text you see. I'm more than happy to revisit and working on improving wording but is hard for me to understand mis communications w/o exact feedback!

Let me explain why there is the warning for only flashing the boot.img. The modules (WiFi, etc) must match the kernel as they are compiled/setup at the same time. If the kernel mismatches with the modules, then the modules will not work. This is the main reason why there are posts saying, "Help, my Wifi stopped working".

Hope that helps clarify any confusion! Appreciate the support!

Thanks for the clarification. I flashed a kernel last night Pirates way.
I have Flash Image GUI on my ROM. Correct me if I am wrong, some roms do not have the boot.img included in the rom, they have it separate, From what I understand is I would just include the boot.img, taken out of the zip and drop it into the rom, Then browse to where the rom is on the sd card with Flash Image GUI and then flash the boot.img..... go into recovery then flash the rom,
My original question, If I have the Boot.img out of the zip, drag it onto the sd card, is it okay just to flash the Boot.img alone? then turn the phone off and go into recovery, flash the rom?
When I tried it this way, I got warnings. So I posted that question.

Originally Posted by dudeluv

Thanks for the clarification. I flashed a kernel last night Pirates way.
I have Flash Image GUI on my ROM. Correct me if I am wrong, some roms do not have the boot.img included in the rom, they have it separate, From what I understand is I would just include the boot.img, taken out of the zip and drop it into the rom, Then browse to where the rom is on the sd card with Flash Image GUI and then flash the boot.img..... go into recovery then flash the rom,
My original question, If I have the Boot.img out of the zip, drag it onto the sd card, is it okay just to flash the Boot.img alone? then turn the phone off and go into recovery, flash the rom?
When I tried it this way, I got warnings. So I posted that question.

Yes to all of the above.

Flash Image GUI will flash basically all the combinations you can create. I've added warnings though to caution uses who aren't familar with the process as I prefer not to see the Flash Image GUI bricked my phone posts/emails/market comments.

Well historitcally, most ROMs if requiring a kernel with either include it or link to a flashable .zip of it.
With this whole HTC unlock issue and confusion, some ROM devs are providing their ROM required kernel separately as a boot.img file.

The warning you received when attempting to flash just the boot.img file was only to inform you that you must immediately flash the associated ROM .zip file from recovery mode or the device might not boot properly.

Thanks for requesting clarification and I'll revisit the wording to verify the clarity. Appreciate the support!

Originally Posted by joeykrim

Yes to all of the above.

Cool, next ROM I flash I am going to try this.

where can i find a kernal for my stock velocity 4g? (says in bootloader that its a holiday)

Originally Posted by WinterKnights

where can i find a kernal for my stock velocity 4g? (says in bootloader that its a holiday)

Majority of customized kernels will be found in the Development board.

If you're looking for the 100% stock kernel, the best source is to extract them from the stock RUU files. These are generally leaked and posted by a user named Football. His threads are also usually in the Development board.

Good luck and appreciate the support!

This is an embarrassingly rudimentary question.

I HTC-Unlocked my Vivid (running GB 2.3.4), and successfully installed FlashGUI. However, after launching it, it wants root before going any further. I would have thought that would be necessary, but the instructions on the OP make no mention of it. They just state HTC Unlock as a pre-req.

Given everyone else's success in using the app, it's painfully obvious that I'm missing something. Any pointers ?

-RKA

Originally Posted by rasar42

This is an embarrassingly rudimentary question.

I HTC-Unlocked my Vivid (running GB 2.3.4), and successfully installed FlashGUI. However, after launching it, it wants root before going any further. I would have thought that would be necessary, but the instructions on the OP make no mention of it. They just state HTC Unlock as a pre-req.

Given everyone else's success in using the app, it's painfully obvious that I'm missing something. Any pointers ?

-RKA

Wow, over 10k users and for some reason this was never pointed out as clearly as you've mentioned. You're definitely right as root access is not mentioned in the OP. In the Android Market, I have it at the top, but on the forum made the assumption people knew root access was required.

Due to Android's security architecture, root access is required before being Android grants write access to the kernel or recovery partition.

Quickest way, is probably to use fastboot to load a custom recovery and flash the superuser.zip file. This will install the Superuser application along with the su binary and setup the correct permissions.

Once root access is properly setup, everything should be good to go!

In summary, as security changes, the most consistent method after using HTC's official unlock will be to use fastboot to load a custom recovery and flash the superuser.zip file.

Hope that helps!

Will it work using on an Inspire 4G?