XIAOMI Redmi note 8t no boot, vibrate only

[adels]

Xiaomi redmi note 8t qualcomme cpu
Reason: water damege
Work: cleaned, tested for short, resoldering.
State: when power button pushed it vibrates only.
More info at request.

I was able to comunicate with the emmc, but i get the message "firmware info not found" when i try to get the firmware info.
Any solution would be appreciated, i will post the logs in few hours when i get to shop.

[adels]

Can any one help me about which firmware or rom should i use for this situation?

[johnnybravo9889]

Hello mate , it would be better if you post logs. Does your emmc still have valid partitions ? if it has you can try flashing stock firmware from miui website but also keep i mind some device shows firmware info not found even f theres no soft issues and phones fully functional , I woukd recommend you to cross check for hardware fault again (especially at power section ) before trying anything in software coz the issue came due to water damage .

[adels]

here is a txt file, i cannot post log, it say that i can't post links

[adels]

Originally Posted by johnnybravo9889

Hello mate , it would be better if you post logs. Does your emmc still have valid partitions ? if it has you can try flashing stock firmware from miui website but also keep i mind some device shows firmware info not found even f theres no soft issues and phones fully functional , I woukd recommend you to cross check for hardware fault again (especially at power section ) before trying anything in software coz the issue came due to water damage .

I checked again the motherboard for shorts, i found no shorts, also luckly the water damage places are far from the ICs, the phone was dead before (vibrate only)
after cleaning an resoldering same situation...
when i put it on the power supply and push the power button, it goes from 0amps to 0.12 and down again,


i also tried to write the boot img from a firmware i downloaded and i kept receiving DATA SND CRC error, i tried many times, some times it starts to write and stop before it ends, most of the times it gives this error at random places, i also tried writing recovery, and system, always get the same error at random points, and i was able to backup without errors.

what i did until now is: backedup userdata, factory format, erase emmc, and i am waiting for emmc to finish erasing it looks slow, max speed is 7800KB/S,

what do i have to do next?

[adels]

now i was able to overcome the data snd crc error by increasing the voltage to 3.0V and freq to 4MHZ , now it is writing normally, but the speed is 440KB/s, is it normal?

[layder]

Originally Posted by adels

now i was able to overcome the data snd crc error by increasing the voltage to 3.0V and freq to 4MHZ , now it is writing normally, but the speed is 440KB/s, is it normal?

connection speed based on freq.

[adels]

Originally Posted by layder

connection speed based on freq.

what about the wires length, usb cable length, and usb port (2.0 vs 3.0)?

[layder]

Originally Posted by adels

what about the wires length, usb cable length, and usb port (2.0 vs 3.0)?

clock frequency (CLK) is the frequency with which data is transmitted. You set 4 MHz, so the speed is. if you want more speed, set a higher frequency. it is logical

About wire lenght: I already wrote many times about ISP connection:

https://forum.gsmhosting.com/vbb/f67...-1mhz-2915742/

https://forum.gsmhosting.com/vbb/f67.../#post14270282

[adels]

thanks, i will see what i can learn, i will read your posts, and if you know anything else useful please send me(text or video), this is the first phone i am working on with easyjtag, i was able to remove FRP from a oppo A1K but that was not as complicated as this one.

[adels]

eMMC are unusable.
Error writing at address: 000000000000 , error: -8 , DATA SND CRC Error(Small ROM Size, maybe) ... Retry #4
Can't init device. Reason: CMD Timeout Error

now i am not even able to write to this phone, after i successfully revived it with willow global image v11.0.5.0 PCXMIXM GLOBAL, the owner asked for v12, so i formated again, and now i cannot write, i tried all the combinations of voltages and frequances, i resoldered many times, replaced the wires, all 7cm, gnd wire is thicker, i tried two different computers, one is win 10 usb 3.0 and the other is win 7 usb 2.0, with different cables, with battery and with usb cable, hipower mode on and off, i even tried the V11.0.5 that worked previously and it did not work this time, what am i missing here?
logs attached.

[adels]

i tried with old emmc tool and new emmc tool UI

[layder]

Originally Posted by adels

eMMC are unusable.
Error writing at address: 000000000000 , error: -8 , DATA SND CRC Error(Small ROM Size, maybe) ... Retry #4
Can't init device. Reason: CMD Timeout Error

now i am not even able to write to this phone, after i successfully revived it with willow global image v11.0.5.0 PCXMIXM GLOBAL, the owner asked for v12, so i formated again, and now i cannot write, i tried all the combinations of voltages and frequances, i resoldered many times, replaced the wires, all 7cm, gnd wire is thicker, i tried two different computers, one is win 10 usb 3.0 and the other is win 7 usb 2.0, with different cables, with battery and with usb cable, hipower mode on and off, i even tried the V11.0.5 that worked previously and it did not work this time, what am i missing here?
logs attached.

thread is sticked: https://forum.gsmhosting.com/vbb/f67...ution-2585863/

[adels]

i got error HW parts check FAIL when i click test settings

Checking security ...
Running:JEDEC: Partitions config burn...
Z3X EasyJtag Software ver. 3.7.0.20
Skip loading eMMC Addon Firmware
CMD Pullup Level:364 mV
CMD Active Level:891 mV
Box IO Level:1800 mV
CLK Rate:4000 kHz
GPP Partition Size Multiplier: 800000, 8192 Kb, 8Mb
Partition configuration:
	No enhanced user data area
	User partition write reliability: off
No GP1 partition
GP1 write reliability: on
No GP2 partition
GP2 write reliability: off
No GP3 partition
GP3 write reliability: off
No GP4 partition
GP4 write reliability: off
All GP Partitions are 0 set size of at least one GP Partition
HW Parts Check Fail.

[adels]

when i use 8MB for gp1 and test write it says successful, will it fix the problems of write/read error and firmware info not found?