Hisense 55H8F Emmc programming help

[EazyBone]

I am extremely new to programming and dipping into this. I picked up a XGECU T48 Programmer and have the correct socket for EMMC.
I took the EMMC off a working main board with no problems and threw it into the programmer. I click analysis IC and it gives me a report (attached) of the current EMMC. Model H26M41204HPR

1) I manually found this chip(above model number) in the select IC section of the XGPRO 12.xx programmer software and it had a option for 4 bit and 1 bit. I chose 4... is this correct?

2) In the options section point number 2 operation says "30 mhz, vcc 3.3 etc etc" also point 2 reading has boxes checked all along down 3/4 etc. Do I need to click or unclick any of these defaults when clicking read (to save file to computer so that I can copy it to another EMMC for future board fixing)

3) Does anyone just have the EMMC file for a hisense 244186 main board? its like 8 gigs

4) When clicking program it says current authenkey is empty etc (see pic at end). Is there something here I need to do or just hit okay? Do I need this key or it ain't gonna work?

5) I am like completely new at this, absolutely nothing is familiar but I have been messing around with it a bit so bear with me. When I program the new chip, I just select the biggest file and click program and it should just work correct?

thanks for answers. I just want to get it right because I have tried copying the old EMMC to a new chip and when I installed it the TV showed the android logo then shut off. The original symptom of the copied file emmc was that the TV would turn on as normal but everything was laggy and skipping etc. I took off old EMMC and it said urgent on analysis.. either way. I didnt know if this software would be corrupt and would then corrupt a new emmc that I put onto the board... so now I have a legit EMMC that shows zero life used and I now need to copy the file and safe for future uses...

any other questions ask.

[Diah]

i don't know why you suspect eMMC at time you have android TV set.. where there are recovery and Bootloader play big roll at such OS system

[lotas]

If the original eMMC has already died, then it is better to read the dump from it, not unsolder it from the board, but solder the wiring and read it using the ISP; it is better in 1-bit mode (when heated, dismantled), it may finally die and you will no longer be able to read anything. After reading the eMMC, you need to check the saved dump, click on “verification” and it should pass the check...

[EazyBone]

i don't know why you suspect eMMC at time you have android TV set.. where there are recovery and Bootloader play big roll at such OS system

I'm not sure what you mean. Why would I suspect the EMMC? I watched a lot of nicks videos and this EMMC fails a lot.. so that's why.

lotas thx. Do I have to change the mhz frequency when reading or writing back to the chip? Says 30mhz as standard.

Also what's with the authen key? What's that mean, do I just click yes or do I need that data somehow

[lotas]

I don't have such a programmer; I usually change (lower) the frequency when the eMMC is poorly read. The RPMB section in the firmware is usually protected by a key; you will never recognize it, only the native processor knows it.
The main thing for you is to make a good copy, sometimes you need the native partitions BOOT1, BOOT2 (without them the TV will not start), and only the USER partition changes.

[Davi.p]

I just want to get it right because I have tried copying the old EMMC to a new chip and when I installed it the TV showed the android logo then shut off. The original symptom of the copied file emmc was that the TV would turn on as normal but everything was laggy and skipping etc. I took off old EMMC and it said urgent on analysis..

Can you clarify this part? You wrote before that mainboard you took off the memory of was ok, which is this TV? The one with lags? How can a lagged software be OK??
If these 2 are the same TV then have you read the software from the lagged tv and copied to another emmc? This emmc gone soldered onto the same tv or another?
Anyway if you readed from lagged tv, have you removed all old balls before put into socket? Lagged tv has bad solder balls for me.. bye..

[EazyBone]

Davi.p
I have two main boards. One is first bad one with bad EMMC second works fine.

I took first EMMC out(lagged) , stuck in programmer and read file. Copied file to new emmc (with new balls and all) and stuck it back on the board. The new emmc/file turns the tv on Android logo appears and then tv shuts off and red light stays solid. This is the EMMC that lagged, or at least the main board in general. So this never worked .

So the original chip was urgent and I copied the potentially bad software (not sure if this makes it bad) and tried it first. This was just to mess around and see what happens. I also didn't think a lagged software would be okay.. but you just got to try things and make mistakes, so that's what I was trying to to do before I got a good one. Lagged EMMC has all solder balls removed when reading.

I now have a new EMMC connected (with the software) on a new main board that has been tested in the TV and works. I have now removed the EMMC from the main board (it came off perfectly) and now need to read the file from the chip (to save it) and then copy to new emmc files to put on new boards.

lotas thx I will try it out
Will trying messing for couple days and report back

[Davi.p]

First a clarificaition, when i asked how can a lagged SW be good, i was not meaning necessarliy bad data on memory, but a badly working SW (the reasons can vary)..

Lagged EMMC has all solder balls removed when reading.

this ??? me to think that the lag of the main board was due to another chip, especially the DDR chips, same reason bad balls, the heating when removing the emmc has corrupted more the ddr balls, this my opinion.. with the "new" mainboard you can read simply the MMC, the authkey, whatever it is, if it was empty on the first emmc, maybe is not useful, i don't know, never exeperimented, i have only NOT EMMC capable eprom programmers..

[Diah]

I'm not sure what you mean. Why would I suspect the EMMC? I watched a lot of nicks videos and this EMMC fails a lot.. so that's why.

its possible eMMC die.. but yours set from 2020 flag... unbelievable the eMMC die of hisense in just 3 years.

[EazyBone]

its possible eMMC die.. but yours set from 2020 flag... unbelievable the eMMC die of hisense in just 3 years.

Interesting. I have had about 9 hisense main boards that were bad. All were 75h6750Gs. Only Google TVs and all including this one was from 2019/2020. Now is it the EMMC in them? Not sure I threw most away. But 3 of them I pulled off showed urgent status.

[CapLeaker]

its possible eMMC die.. but yours set from 2020 flag... unbelievable the eMMC die of hisense in just 3 years.

I've seen EMMC's not even hitting the one year mark.

[Diah]

I've seen EMMC's not even hitting the one year mark.

Hisense?

[CapLeaker]

Hisense average is 3 years. The quality and longevity of the eMMC varies widely.

[Diah]

my Hisense UHD since 2014 never open the back of it and it work over 7 hours a day , also eMMC dead faced with Samsung only and Philips when eMMC SK brand

[CapLeaker]

my Hisense UHD since 2014 never open the back of it and it work over 7 hours a day , also eMMC dead faced with Samsung only and Philips when eMMC SK brand

I remember Hisense failing backlights and eMMC just before or shortly after warranty ended, I also remember some Sony, Samsung, Sharp and Philips.
I haven't figured out why some eMMC's die earlier than the other even so they are identical brand and series and.doing the same thing.
Essencore is another brand that is shits…

[EazyBone]

I remember Hisense failing backlights and eMMC just before or shortly after warranty ended, I also remember some Sony, Samsung, Sharp and Philips.
I haven't figured out why some eMMC's die earlier than the other even so they are identical brand and series and.doing the same thing.
Essencore is another brand that is shits…

I heard (not sure where) that when using the smart apps (Google TVs specifically) it wears the EMMC down, but If you used Apple TV or firestick always thru USB it wouldn't do that. Anyone heard this B4?

[CapLeaker]

I heard (not sure where) that when using the smart apps (Google TVs specifically) it wears the EMMC down, but If you used Apple TV or firestick always thru USB it wouldn't do that. Anyone heard this B4?

That is not with all eMMCs the case. Some last forever like, others are fuxed within a year. It all depends on how much write and erase cycles vs available space on the eMMC. If this thing is reading writing and overwriting within a small space, yeah the eMMC will go down fast. If the eMMC has large available space to be written on, less overwrite cycles there are and it will last longer.
Using a firestick I suspect it would still write something small on the eMMC, but that isn't a constant thing. So prolonging the longevity of the eMMC.

[Davi.p]

Yes, outside than using, installing, deleting smart tv apps, there are not much write activity in a tv partition, so it is clearly much less risky using an external smart tv engine, i repeat it, do this little experiment, if you get hands on a working tv of a model with known common emmc faults, seal the emmc and all bga with hot glue, then give it the customer,.ask him to answer an email survey each 6 months about the functionality of the set, report it back... let's see..