@Lost_N_BIOS
Yes,but you konw,minority of these HP mobos could make it.
Yes, some may even have jumper too
Sorry that happened! Since it stuck, we don’t know if due to bad BIOS mod, or random flash error etc. But, at least we know that edit I made allows you past the mob BIOS block check.
Very sorry to see this, yes, I agree, it will probably be a brick when you reboot. However, maybe you can stop it without rebooting somehow, does ESC do anything?
You’ll need flash programmer now, but at least that way you can put on any BIOS you want, and remove all/any flashing locks before that too, so you can flash in mod BIOS easier later.
So the only way to flash a MOD Bios is by HW flash programmer? does the solution need a big expance of money?
Seems that may be only way, unless what gloobox mentioned works on this model, but you can’t try it now
No, flash programmer is cheap (less than $7 total shipped for all you need). You need CH341A + SOIC8 test clip with cable, let me know if you need linked examples.
You may be able to recover from this brick by using some recovery method, you’ll have to google this model and BIOS recovery, to see if there is any possible known working methods.
PC is NOT Bricked… it’s working… (i’m writing from it)
i was just afraid for a brick when i saw the Hang at 1%
If there is no other way, 7/8 $ can be invested… even just for "fun" in trying to get the satisfaction of M.2 Boot support… 
Awesome! I was wondering if you rebooted yet or no 
Yes, I would expect brick too at a 1% BIOS flash hang, surprised it didn’t brick!
Yes, best to get the programming tools, they are cheap, and then you can safely dump, edit, and reflash any BIOS on any board, and wont have to worry about bricks in future boards because you can then always recover.
If you ever use Asus or Asrock boards too, with BIOS in socket, you may want to add another $1 item to your shopping list (U Type Flat IC Extractor)
Usually i use H61 H81 mobo by Asus/Asrock/MSI where are available FW files easily.
But more recently i come throug HP PC that are more customs with soldered bios chip and "non common" Bios protection.
if you can suggest a reliable place where to order it…
link me the address please…
thank’s
@Lost_N_BIOS
Here is examples on ebay, shipped slow and cheap, you can get on ebay from other sellers that may be more local or ship faster. Or, you can also find in other places that sell computer stuff, like Amazon, Newegg etc
Sometimes, in some places, you can also find the programmer and cable in one kit (some also have the 1.8v adapter bundled together into a kit too)
https://www.ebay.com/itm/332735579991
https://www.ebay.com/itm/382486015977
https://www.ebay.com/itm/123167465408
This may also be needed on more modern BIOS in the future, if you wanted to be sure you get all bases convered in one order
https://www.ebay.com/itm/202046860676
will order one and come back to you once i’ve it in my hands
Programmer arrived but… as you see, the Bios Flash Chip isn’t present in the list.
that to do? 
Happy new year
@Lost_N_BIOS
@toxstoxs - For (Macronix aka MCIX) MX25L6473E Download this package - http://s000.tinyupload.com/index.php?fil…695330485827902
Use - CH341A v1.31(1.4) (CH341AFree) - choose 8MB/64Mbit - then read, verify, and save once you get "Chip and buffer or main memory match"
You can also try MX25L6465E ID in 1.30 and 1.34
Or ASProgrammer 1.41 has the exact ID if you want to use that instead - https://github.com/nofeletru/UsbAsp-flash/releases/
Should i use the snap tool i received with the programmer to "lock on" soldered chip or… should i remove the bios chip from the Mainboard?
@Lost_N_BIOS
Yes, you use the clip tool, here’s some guides to show you how
https://www.bios-mods.com/forum/Thread-G…341A-programmer << Same as one directly below, but with all images expanded/visible at once
[GUIDE] Flash BIOS with CH341A programmer
[Guide] Using CH341A-based programmer to flash SPI EEPROM
[GUIDE] The Beginners Guide to Using a CH341A SPI Programmer/Flasher (With Pictures!)
https://www.techinferno.com/index.php?/f…grammer-ch341a/
https://weborus.com/guide-flash-bios-spi…ini-programmer/
Guide is pretty clear to me but…
Just one question…
if the bios will be 100% error free read from the programmer, is it sure 101% that has no corruption bit?
i do not have any “safe” source to compare it with. (beside the extracted bios file)
Once i have the file, will you be able to understand if it’s a clean 100% file that can be modded and flashed again?
@Lost_N_BIOS
Something strange happen…
as you see from picture, i’m quite sure all is correctly connected and oriented but…
as soon as i connect the snap tool flat cable to programmer, the red power light fade out and the programmer desappear from windows.
Clear symptom of a kind of short circuit connection.
where is my mistake?
@Lost_N_BIOS
@toxstoxs - sorry for delay, I just came across your post!! All looks setup correctly, so either short in your cable or bad programmer, OR you need to maybe remove that jumper, OR maybe leave power connected to board (or removed)
Cable should be connected inside programmer before you get started, and now that you know correct position if that PCB is not soldered to the pins, you can leave out the PCB part.