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Samsung Accidental MICOM Upgrade

Posted: Sat Aug 18, 2012 12:14 pm
by Zogpy
Hi everyone

I have a Samsung LED TV, that I bought a month ago, it has developed a permanent green vertical line in the middle, I tried everything
(Factory reset, changing cables, firmware upgrade ...) but with no luck I knew about service menu, I tried changing some settings, till I accidentally hit MICOM Upgrade,
it took so long with no response at all, I powered off the TV, powered on again & it's dead blank screen. the remote & front panel no longer works, there is a Red light at the back coming from the Digital Audio out.
what can I do to make it work again ?

Re: Samsung T23A350 Accidental MICOM Upgrade

Posted: Wed Aug 22, 2012 4:58 pm
by Mankri
My TV is UA32D4000. It also had a colour problem and I did the same thing. Now nothing works. I tried with unbriking the EEPROM. But no change. Not even the red LED blinking as many other samsung LED TV problems wrote in this site elsewhere. Are there anyone familiar with this...Pls help :roll: .

Re: Samsung T23A350 Accidental MICOM Upgrade

Posted: Wed Aug 22, 2012 6:31 pm
by juusso
THis is fatal mistake to touch micom upgrade in service menu. Just m/b replacement helps. Either by warranty, or by yourself.

Re: Samsung Accidental MICOM Upgrade

Posted: Wed Nov 28, 2012 7:51 pm
by antibackout
I dont think so, there has to be any obtion to fix it up again.

Re: Samsung Accidental MICOM Upgrade

Posted: Wed Nov 28, 2012 7:55 pm
by juusso
How? I really want to know how to fix. If you know, please share with us... :)

Re: Samsung Accidental MICOM Upgrade

Posted: Thu Nov 29, 2012 8:58 pm
by E3V3A
Did you check for output on the UART / RS232 ?

I don't know what is MICOM or what it is supposed to be doing, but since its "upgradable" it could be bootloader or efuse related...
Thus attempting to update MICOM, it may expect you to supply some file somewhere or simply changes some internal efuses.

Only RE of the service menu code could really tell us what its doing. Anyone willing to chime in?

Re: Samsung Accidental MICOM Upgrade

Posted: Mon Dec 03, 2012 3:35 am
by E3V3A
"Micom upgrade" most likely activates the MICOM firmware downloader. This mean that after you have done entered this mode, your TV is waiting for a file that contain the firmware. For Mstar devices, there is a special eMMC uploader that is connected either/or to UART (via windows COM port) or USB. We don't know how to use this feature yet, but it is well known on Samsung mobile phones. (Entering download mode / bootloader download etc...)

In addition there should be some way to reset your Micom chip, and maybe maybe hopefully it would exit download mode...

In addition, in one LG related TV with similar Micom chip and Mstar, there is an upload program, that is used through UART (RS-232) to upload a Samsung "hex" file. A "hex" file is just a binary file converted (in a special format) to ASCII readable text file. I also read in some B-model service manual that there might be a way to enter Uboot prompt, by hitting "SHIFT + ~" while booting (and in UART), but I have no idea if this feature is still available...

Re: Samsung Accidental MICOM Upgrade

Posted: Mon Oct 21, 2013 10:41 pm
by Aleoliver
Hi! Any update on this topic? I have the same issue, tv won?t turn on after interrupted Micom Upgrade. I appreciate any help. Thanks

Re: Samsung Accidental MICOM Upgrade

Posted: Sat Nov 16, 2013 5:49 pm
by thair
accidentally i too got the same issue , my TV model UA40D5000PM LED is not turning on. some one can tell where is MICON chip located on MB their should be some way to reset it, help anyoneeeeeeee :(

Re: Samsung Accidental MICOM Upgrade

Posted: Sat Nov 16, 2013 7:13 pm
by juusso
no help, no known solution. Apologies.