Hisense 55Q9G Android reset / factory firmware reload

[Nicktronic]

Thank you David.p, I will see what options are around for recalling...

[Davi.p]

Hi, my guess is: set apart the replacement main board, take the original one to a service shop to do an emmc reballing, then try the update with the correct file.. if it works then wait, there's a further step.. bye..

[Nicktronic]

Thank you for the FW mon2. When I turn the TV on, it gets to the home screen, but after about 10 seconds the TV turns off. It's not enough time for me to start the FW install off the USB stick. I read that if you hold the power button on the remote when turning the TV on with the USB stick plugged in, it will auto install the FW. All I got was the "checking" window like it was checking the FW prior to install. When that completes the TV turns off and goes no further. Any thoughts on what could be happening? I'm stuck....

[Nicktronic]

At this time, I finally have the latest firmware for this 55Q9G

Hi, would you mind sharing where you got the firmware. I'm having the exact same issue with a 55Q9G. I would like to try re-flashing too.

[mon2]

At this time, I finally have the latest firmware for this 55Q9G and also the 65" version of this model. Can this firmware be applied using a USB key to correct the parameters? Even though this TV with the 65" firmware has auto-updated to the latest - can we apply the 55" firmware? TBH - does the USB firmware tool even know the difference of the firmware packages? I think not as long as the pkg file is properly CRC'd.

[Diah]

Sorry - picture is from a video on youtube - not our unit. Will ask the client to take pics. TBH - scared about this menu but will review. Too many cases where the unit was bricked

keep silent don't ask.... he will missing all... u should ask before give it back to owner and u know its still have issue

[mon2]

Sorry - picture is from a video on youtube - not our unit. Will ask the client to take pics. TBH - scared about this menu but will review. Too many cases where the unit was bricked

[Diah]

Please see attached. Found this in a YT video. Is this the PWM frequency to change? I recall Hisense tech mentioning 180 zones - perhaps change this value to a lower value?
( not sure if we have this same menu but will ask the client later today )

this what did you show also there over load at BL the value should be not more as ---- Min BL 0... 20BL 30 .... Mid BL 80 , 80BL 90, Max BL 100 .... so at user setting menu set BL level to ... 35 -40
PWM Freq are one of BL zone... but it related to Factory Factory Option which key and version didn't show at yours photo

[mon2]

Please see attached. Found this in a YT video. Is this the PWM frequency to change? I recall Hisense tech mentioning 180 zones - perhaps change this value to a lower value?
( not sure if we have this same menu but will ask the client later today )

[Diah]

So using this process, we can change the screen size to 55" to fix this BL issue? This is awesome. Will share with the client so wish to be clear on the procedure. Thanks so much.

you will have option too for BL.... just be xcarfull dont miss with KEYS.... NETFLIX etc.

[mon2]

So using this process, we can change the screen size to 55" to fix this BL issue? This is awesome. Will share with the client so wish to be clear on the procedure. Thanks so much.

[Diah]

Thank you. Could you please share how to perform this change in the service menu?

go to menu ... audio... advanced setting then go to balance keep ot high light and be sure its on 0... try press 1969 or 0532 the reset will be easy to you..you will have M letter on the top left ... press setting on RC it will open for you... any after change need to have clear chip in SM so all setting will pass together

[mon2]

change the spec of the set in service menu enough to let the FW handle other Size BL Zone

Thank you. Could you please share how to perform this change in the service menu?

[Diah]

The vendor noted this could be due to the difference in the number of LED zones on the 65" (188?) vs. 55" (132?). Any feedback?

that's True,,, since android Firmware share same package to all sizes.change the spec of the set in service menu enough to let the FW handle other Size BL Zone as they are all saved in FW..

[mon2]

Hi. A few updates and questions on this case.

1) Proceeded to order a factory new controller board for this 55Q9G to service the worn out emmc which prevents the Android OS from properly booting. Always crashes at a fixed point of the boot process. The vendor shipped a controller board for the 65" Hisense as the 55" main board is not available and is EOL. This was an honest mistake by the vendor as we also had a 65" request with a backlight fault which is not worth repairing.

2) Applied the new board on arrival and now facing a led flicker on first power on and then this fault disappears. The vendor noted this could be due to the difference in the number of LED zones on the 65" (188?) vs. 55" (132?). Any feedback?

3) The vendor noted it is not possible to reflash the firmware to change the models yet the controller board is 100% identical - that is the firmware is obviously different inside the controller boards. A vendor in China noted the fault is not the controller board but the power supply or led drivers. Could the LED driver be at fault? We still have the original non-working controller board for testing if required. The unit is with the owner.

Summary: The 65" main board works 98% on the 55" 55Q9G for which the main board is no longer available except for the initial power up led flicker. How to eliminate the led flicker? Replace with a constant current universal LED driver? The flat FPC cables are not fun to interface with so prefer not to take this route. Will double check the connector seatings but we were extremely careful to not flex any of the rigid fpc cables, etc. The new board did perform 2 automatic firmware updates from the Hisense server.

Welcome all feedback.

Shipped board that was installed:





T270342

65Q9G

T270342

Main board

Board that should have been shipped and installed but is EOL and no longer shipping:

55Q9G T270089 Main board Main Board ----NO STOCK EOL

[mon2]

Thank you guys. Attempted again as per Reddit articles (by Hisense) to use < 16GB (mine is 8GB) USB 2.0 stick with the above 65" firmware (ONLY - no other files onboard this stick) and was previously formatted with FAT32. The USB media is found and the OS is 'Checking the pkg file' for about 5 mins or so and then powers off but the white LED remained lit. That is, the fact that the 'checking' process ran for 5+ mins, this confirms the power supply is NOT the fault. However, the file was apparently rejected since I am still on the same OS quirk with the same apps as per the start.

[Diah]

free of charge advice .. don't use web to search firmware for android... call them call and tell yours Serial don't come via yours dummy web....id they have will send u direct link

i check too on Hisense server cannot find yours set

web : http://hisenseczech.myqnapcloud.com:...?ssid=0MmKZDg#
password: Hisense1234

[lotas]

Here's another link to 55.
https://www.reddit.com/r/Hisense/com...mment/jk801rr/
https://hisense365americas.sharepoin...o.com&e=bZ23UT

[Diah]

NO, its firmware

[wamo]

"You don't have a smaller memory, like 2GB? It could be because of that... I don't know why, but it doesn't work with larger memories."