MCUmall EPROM BIOS Chip Burner Forum
MCUmall EPROM BIOS Chip Burner Forum
Home | Profile | Register | Active Topics | Members | Search | FAQ
Username:
Password:
Save Password
Forgot your Password?

 All Forums
 MCUmall Forums
 GQ-5X
 Blank Check failed after Erase

Note: You must be registered in order to post a reply.
To register, click here. Registration is FREE!

Screensize:
UserName:
Password:
Format Mode:
Format: BoldItalicizedUnderlineStrikethrough Align LeftCenteredAlign Right Horizontal Rule Insert HyperlinkInsert EmailInsert Image Insert CodeInsert QuoteInsert List Spell Checker
   
Message:

* HTML is OFF
* Forum Code is ON
Smilies
Smile [:)] Big Smile [:D] Cool [8D] Blush [:I]
Tongue [:P] Evil [):] Wink [;)] Clown [:o)]
Black Eye [B)] Eight Ball [8] Frown [:(] Shy [8)]
Shocked [:0] Angry [:(!] Dead [xx(] Sleepy [|)]
Kisses [:X] Approve [^] Disapprove [V] Question [?]

   Insert an Image File
Check here to include your profile signature.
    

T O P I C    R E V I E W
PFM Posted - 02/19/2015 : 16:28:14
Hello,

I am trying to reuse 4 NAND chips (Samsung K9F4G08U0D).

2 were well erased and after blank check they were blank and I then reprogrammed them.

Instead, 2 of them get an error when I perform blank check:

"Flash is not blank at address 1C476000 ,target 00"

What does it mean, please?

Can these chips be reprogrammed, or are they bad?

Thanks

3   L A T E S T    R E P L I E S    (Newest First)
eduardo48 Posted - 06/25/2015 : 19:18:19
Hello you can explain the u-boot program. I have nand that are in good, but has sectors with zeros, and erase command that puts non ff
PFM Posted - 02/20/2015 : 11:51:49
Thanks for your reply!
GQ5XSupport Posted - 02/19/2015 : 21:13:16
Nand flashes often have bad sectors. So those sectors cannot be reprogrammed.
In OS they will mark them as bad sector and continue to use it. However as programmer it will not know the algorithm to bypass it
To proper way to use it is program the boot (u-boot) and then let the target to program itself. A pure clone will not work if the target has bad sectors.

GQ-5x can be used for backup or data recover purpose. If you want to use programmer to produce clone, then make sure the target has no bad sectors.

MCUmall EPROM BIOS Chip Burner Forum © Copyright 2003 - 2009 Mcumall Electronics Inc. Go To Top Of Page
Generated in 0.09 sec. Snitz Forums 2000