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Author Topic: Recovering from a bad bios flash: The hard way  (Read 12548 times)
pheona
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« Reply #20 on: September 06, 2009, 12:46:02 PM »

yup.. lesson learned talaga .. pero from what happened, ngayon di na ako takot mag bios flash ngayon Grin

at mas reliable pala yung flashing sa boot-up ng AMI kasi failsafe daw yun accdg to some websites (alt-F2 sa boot up)... pag nagbad flash ibabalik ka lang daw nya ulit doon sa start-up hanggang sa ma load nya yung correct bios.. at etong method na ito ginamit ko kahapon sa ASus EEE ko para matest ko lang hehehe (bios flash method ng PC, not yung ginawa ko)... successful naman hehehe Grin

madali nga lang e flash ang ami, pero kailangan tlaga back-up muna ang original na bios, bago mag flash ng bagong updates, para ano man ang mag-come-up na problema pwede rollback sa original.  Smiley

anyway, ang galing mo pala sa harware programming pati bios kaya mo na, malapit kanang maging unlimited sis!  Wink


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« Reply #20 on: September 06, 2009, 12:46:02 PM »

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Tambay_7
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« Reply #21 on: September 06, 2009, 12:56:47 PM »

madali nga lang e flash ang ami, pero kailangan tlaga back-up muna ang original na bios, bago mag flash ng bagong updates, para ano man ang mag-come-up na problema pwede rollback sa original.  Smiley

anyway, ang galing mo pala sa harware programming pati bios kaya mo na, malapit kanang maging unlimited sis!  Wink

yup. basta di nadale ang bootblock area may pag-asa pa marecover at ma-rollback... kaya nung nagtanong ako sa tipidpc, at nabasa ko ang reaction ni sir motion nung nalaman nya na sa bootblock area naghang, alam ko na Im in a deep trouble... at based sa nabasa ko (google search), nasa bootblock area yung method ng pagrecover ng BIOS. kaya pag nadale bootblock, malamang kelanganin na ang external programmer...

pero simple lang pag program ng BIOS IC sis... para lang siyang 24cxx EEPROM pero mas madami lang siyang commands/instructions set.
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« Reply #22 on: September 06, 2009, 01:06:24 PM »

a ganon ba...nagprinta nga ako ng bios script ang haba pala, wala akong maintindihan  Grin

okay ang experience nyo sa boot-block at least nakarecover naman ang asus nyo, kahangahanga ang ginawa nyo sis!  Shocked
 
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Tambay_7
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« Reply #23 on: September 06, 2009, 01:17:45 PM »

actually very simple ang process ng flashing ng bios, let me share para in case magkaroon kayo ng problem:

1. get the BIOS file from the website
2. verify the size, and it should be same size as the BIOS. In my case 524,288bytes file size, and the Flash IC file size is 524,288 din, so the data should be written to address 1 is to 1.
3. Write the bios file.
4. Verify.
5. Done

Code:
Pseudo Code(almost) ;D

#define BIOS_SIZE 524288

// extract file
MyArray[] = ExtractFileBytes(FileName.ROM);

//check Array Size against expected Bios Size
if(length(MyArray)!=BIOS_SIZE)
     Error!

// Write
for(int ctr=0;ctr<BIOS_SIZE,ctr++)
     {
     Address=ctr
     Data=MyArray[ctr]
     WriteToSPIFlash(Address,Data);
     }

// Read
for(int ctr=0;ctr<BIOS_SIZE,ctr++)
     {
     Address=ctr
     Data=ReadSPIFlash(Address);
     if(Data!=MyArray[ctr]) Error! Exit!
     }

Done
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« Reply #24 on: September 06, 2009, 01:23:46 PM »

teka sis, nag-flash kayo ng bios file ng asus nyo na hindi intended sa model number at order number ng asus nyo?   Huh
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« Reply #25 on: September 06, 2009, 01:29:19 PM »

Sa mga site ng manufacturers sinasabi din nila na wag kayong mag-bios update kung nagwowork naman yung dati. Grin

nicely done sis seven! galing mo talga... Grin

your really the MOTHERQUEEN!
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« Reply #26 on: September 06, 2009, 01:36:26 PM »

teka sis, nag-flash kayo ng bios file ng asus nyo na hindi intended sa model number at order number ng asus nyo?   Huh

the BIOS file I downloaded is intended for the model I am using... also, the BIOS Flasher exe (AFUIDOS.exe from Asus), verified it first na valid yung ROM file for the motherboard before magproceed... from a customer's point of view, dapat ok ang lahat since it verified everything and should guarantee na dapat maging ok ang Bios flashing...

Sa mga site ng manufacturers sinasabi din nila na wag kayong mag-bios update kung nagwowork naman yung dati. Grin


oo sis, pero minsan kasi nakakatempt lalo na pag nakita mong andaming improvement doon sa bagong bios update. yung dinownload ko kasi na bios is may improvement sa thermal management, which could lengthen the life of my Asus EEE... kamuntikan pa tuloy mag shorten ang life dahil sa bios flashing Cheesy Cheesy Cheesy
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« Reply #27 on: September 06, 2009, 01:39:22 PM »

yah, hindi kasi specific yong published bios updates nila sa website nila, halos awayin ko na nga yong helpdesk ng hp dahil hindi ako bigyan nong original na bios file ng hp ko with reference sa serial number nito.... Sad
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« Reply #28 on: September 06, 2009, 01:40:37 PM »

yah, hindi kasi specific yong published bios updates nila sa website nila, halos awayin ko na nga yong helpdesk ng hp dahil hindi ako bigyan nong original na bios file ng hp ko with reference sa serial number nito.... Sad

asan na yung HP nyo? ok pa ba?
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« Reply #29 on: September 06, 2009, 01:49:47 PM »

asan na yung HP nyo? ok pa ba?

ayon, after 8 months from bios update, umusok!  Sad

....tamang-tama nag-lapse yong 1 yr warranty ng two months  Grin
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« Reply #30 on: September 06, 2009, 01:54:36 PM »

sayang ah.. magkano bili nyo? di yata covered ng warranty pag burnt components?
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« Reply #31 on: September 06, 2009, 02:02:17 PM »

65k ata yon, may service center naman dito sa amin kaya lang papalitan daw ng mother board 25k at cpu (centrino) 7k + labor pa, kinahoy ko nalang ang HD at RAM at pignaglaruan ang LCD hehehehe.... Grin
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« Reply #32 on: September 06, 2009, 02:06:48 PM »

sayangggg... grabe talaga yang mga service center na yan.... palit kung palit na lang...
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« Reply #33 on: September 06, 2009, 02:25:02 PM »

^ ganun talaga mga service center, maliit kasi kita kung hahanapin 'yung sira. Grin nung nag-repair ako dati ng board ng CNC, gusto nilang palitan 'yung buong board (nasa 30k ata), nung na-troubleshoot ko, isang MOSFET lang ang sira. Grin Grin Grin
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« Reply #34 on: September 06, 2009, 02:28:15 PM »

^ ganun talaga mga service center, maliit kasi kita kung hahanapin 'yung sira. Grin nung nag-repair ako dati ng board ng CNC, gusto nilang palitan 'yung buong board (nasa 30k ata), nung na-troubleshoot ko, isang MOSFET lang ang sira. Grin Grin Grin

Grin Grin Grin Grin Cheesy Cheesy
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« Reply #35 on: September 06, 2009, 02:29:13 PM »

^ ganun talaga mga service center, maliit kasi kita kung hahanapin 'yung sira. Grin nung nag-repair ako dati ng board ng CNC, gusto nilang palitan 'yung buong board (nasa 30k ata), nung na-troubleshoot ko, isang MOSFET lang ang sira. Grin Grin Grin

Grin Grin walang pinagkaiba sa mga cellphone repair shop Grin Grin
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« Reply #36 on: September 06, 2009, 02:34:25 PM »

^ naalala ko 'yung isang nag-OJT sa amin dati, kwento nung mga kasama niya nagtrabaho sa cellphone repair shop tapos sinasabi kung ano talaga 'yung sira at kung madali lang ginagawa ng libre. pinagalitan nung may-ari kasi wala daw silang kikitain. Grin Grin Grin

@sis 7: kahawig ba nung Winbond flash 'yung mga dataflash ng Atmel?
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« Reply #37 on: September 06, 2009, 02:37:07 PM »

wow! talagang MotherQueen nga Cheesy
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« Reply #38 on: September 06, 2009, 02:38:23 PM »

^ astig talaga 'yang si Mother Queen, ang daming alam at talent. Grin Grin Grin
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« Reply #39 on: September 06, 2009, 02:41:42 PM »

^ naalala ko 'yung isang nag-OJT sa amin dati, kwento nung mga kasama niya nagtrabaho sa cellphone repair shop tapos sinasabi kung ano talaga 'yung sira at kung madali lang ginagawa ng libre. pinagalitan nung may-ari kasi wala daw silang kikitain. Grin Grin Grin


nyahahaha.. yun pala sekreto doon... yan pala magandang business Grin


Quote
kahawig ba nung Winbond flash 'yung mga dataflash ng Atmel?

magkahawig ng alin sis?
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