Today I was tidying my fastdial logos, since I saw that he accepts the url of the logo, but I accidentally deleted the fast dial folder and then i restore bookmarks fast dial with xmarks , only the logos are gone ... what do I do?
Help me please.

I presume that you mean the Fast Dial Folder in Bookmarks..
Is that right ?

All bookmarks and Logos in Fast Dial are stored in Firefox bookmarks (places.sqlite)

So in theory at least, if you restore an earlier version of Bookmarks from an earlier backup (that is before this problem occurred) you should be able to restore your Fast Dial folder.

[Bookmarks are automatically backed up in recent version of Firefox.
The back up is of the JSON type]

Go to bookmarks/organise bookmarks/import and backup
The restore, and then chose a suitable date.

That should restore a previous version of your bookmarks, which will include the Fast Dial folder that you deleted (hopefully)

However I would think it a good idea to switch off the synchonisation with xmarks, while you are doing this, as it complicates matters don't you think...

Please also see this link

http://userlogos.org/node/8884

These were two different posts of how users used xmarks to recover their bookmarks while using xmarks.

but i don't have how to recover my bookmarks by firefox, because i don't had made any backup before,

It does not matter
As I said before the backups by Firefox are automatic.

Please restore your bookmarks like this:

The longer you leave this decision the less chance there is of recovering your bookmarks, as these backups are automatic.
So for example now your last bookmarks will have been of bookmarks without the Fast Dial Folder.

So try to find an earlier backup where Fast Dial was still in bookmarks.

Do you understand :

You can also see here, but the recovery of bookmarks there although using exactly the same method is for a different original problem.

Please see here

I am not sure I understand your:

And i want to syncronize the logo, like i do to syncronize the bookmarks, because we can put the url from logo, so i wish i could put the url logo in one bookmark and this logo
appears when i used another firefox, is that possible?

But if all your fast dial folders in all your machines have the same name, then xmarks will automatically synchronise all your Fast dials, as Fast dial is a bookmarks folder.

However what I do not quite understand is that if you for example delete the Fast dial folder in bookmarks, how does xmarks respond to this.

That is why I suggested switiching off xmarks whiile you try to recover the fast dial folder in Bookmarks.

When you have recovered the Fast DIal folder, I personallly would restart firefox, then make a BACkUP of Bookmarks in Bookmarks, then I would backup your Firefox Profile with FEBE

Then and only then would I enable xmarks

Once you have set up FEBE, I would recommend you backup your proflile on a regular basis. It is easy to do once FEBE is set up.

Please see details here

OK

there are two questions.

First is concerning the loss of your cells.

Have you resolved ?
Please give some feedback on this question...

You will need to refresh the page to see the logos

It is important to do this first, with xmarks disabled

But i'm asking how to syncronize the logos in different firefox?

I have already answered this question.

Xmarks synchronises bookmarks
Fast dial information is stored in bookmarks
If in each computer the name of the Fast DIal folder in bookmarks is the same ie Fast Dial, then your Fast Dials will synchronise.

I believe also with xmarks you can backup to xmarks.com
Do you do this ?

Also for your interest

http://hiankun.blogspot.com/2009/08/qna-fast-dial-went-empty-and-xmarks....

It would seem that if you go to xmarks for a backup you will see this menu:

more information on xmarks.com restore capability

http://www.xmarks.com/about/features/backup_and_restore