[GUIDE] Lenovo Legion Y70 - Unbrick with QFIL - Android Q&A, Help & Troubleshooting

Since there's no Legion Y70 section, I'm posting this here in hopes of helping those who may have bricked their device (like I did).
Requirements:
1. Stock rom. I used L71091_CN_SECURE_USER_Q00041.0_S_ZUI_14.0.697_ST_221216_QPST.zip but any version will work.
2. QPST, QFIL, and Qualcomm drivers installed. I installed them from here: https://qpsttool.com/qpst-tool-v2-7-496
Steps:
1. Extract the stock rom zip to a folder with no spaces. For example I used C:\Stock\
2. Open QFIL, click on Configuration->Firehose configuration
3. Set the configuration settings as shown in attached file config.png (reset state machine should be checked, device type UFS)
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
4. Back in the main QFIL window, select:
Build type : Meta build
Programmer Path: Select the xbl_s_devprg_ns.melf file from where you extracted your stock rom .zip
Content XML: select contents.xml
Storage types: ufs (in the middle and in the bottom right corner too!)
RawProgram and Patch: Select all available files in the rom directory.
For RawProgram, there should be 9 files: rawprogram_unsparsed0, retain_userdata, unsparsed4, and rawprogram 0 to 5
For patch, there should be 6 files: patch0 to 5
5. With the phone off and unplugged, hold volume up + volume down at the same time
6. Plug the phone into a USB slot on your computer while still holding the volume up+down buttons. Wait for Qualcomm HS-USB QDLoader 9008 (COMx) to appear on top of the QFIL screen. You can now release the volume buttons.
7. Click Download Content.
Voila!
My phone was bricked/bootlooping giving me a QUALCOMM CRASHDUMP error on boot up for several days now after trying to load a custom rom and I kept getting SAHARA FAIL error in QFIL while trying to reflash stock in EDL mode. Finally the above settings worked!

---

sso003 said:
Since there's no Legion Y70 section, I'm posting this here in hopes of helping those who may have bricked their device (like I did).
Requirements:
1. Stock rom. I used L71091_CN_SECURE_USER_Q00041.0_S_ZUI_14.0.697_ST_221216_QPST.zip but any version will work.
2. QPST, QFIL, and Qualcomm drivers installed. I installed them from here: https://qpsttool.com/qpst-tool-v2-7-496
Steps:
1. Extract the stock rom zip to a folder with no spaces. For example I used C:\Stock\
2. Open QFIL, click on Configuration->Firehose configuration
3. Set the configuration settings as shown in attached file config.png (reset state machine should be checked, device type UFS)
View attachment 5866435
4. Back in the main QFIL window, select:
Build type : Meta build
Programmer Path: Select the xbl_s_devprg_ns.melf file from where you extracted your stock rom .zip
Content XML: select contents.xml
Storage types: ufs (in the middle and in the bottom right corner too!)
RawProgram and Patch: Select all available files in the rom directory.
For RawProgram, there should be 9 files: rawprogram_unsparsed0, retain_userdata, unsparsed4, and rawprogram 0 to 5
For patch, there should be 6 files: patch0 to 5
View attachment 5866437
5. With the phone off and unplugged, hold volume up + volume down at the same time
6. Plug the phone into a USB slot on your computer while still holding the volume up+down buttons. Wait for Qualcomm HS-USB QDLoader 9008 (COMx) to appear on top of the QFIL screen. You can now release the volume buttons.
7. Click Download Content.
Voila!
My phone was bricked/bootlooping giving me a QUALCOMM CRASHDUMP error on boot up for several days now after trying to load a custom rom and I kept getting SAHARA FAIL error in QFIL while trying to reflash stock in EDL mode. Finally the above settings worked!
Click to expand...
Click to collapse
(Solved)i keep getting SAHARA FAil error too in QFIL.. Can u tell me how did you solve this problem? and where did you find stock rom? i have only zui14 220914 rom and this rom has a SAHARA error
—— i chose the wrong stock rom. It is not working on QFIL

---

.

---

.

---

.

---

wjswnsgk0204 said:
(Solved)i keep getting SAHARA FAil error too in QFIL.. Can u tell me how did you solve this problem? and where did you find stock rom? i have only zui14 220914 rom and this rom has a SAHARA error
—— i chose the wrong stock rom. It is not working on QFIL
Click to expand...
Click to collapse
Hello, maybe it's late but for those who need it, I had the same problem as you, that always came up until I came across some advice on why it usually happens, in my case it was that the connection was made before time, We must configure everything long before placing and connecting the mobile in EDL mode, be careful it must be a 100% original USB cable of any brand for the data transmission to be successful... I hope it works for you...
credits: https://www.getdroidtips.com/sahara-fail-error-in-qfil/

---

where can we find the stock rom

---

kalid191 said:
donde podemos encontrar la stock rom
Click to expand...
Click to collapse
Hello, this link is https://drive.google.com/file/d/1bRKqkWb7RDcrnXZEnS701T87nfgHxUrk/view?usp=share_link

---

GustavoRj98 said:
Hello, this link is https://drive.google.com/file/d/1bRKqkWb7RDcrnXZEnS701T87nfgHxUrk/view?usp=share_link
Click to expand...
Click to collapse
thank you so much,
another file i want to ask for is vbmeta.img do you know where can i find it

---

kalid191 said:
thank you so much,
another file i want to ask for is vbmeta.img do you know where can i find it
Click to expand...
Click to collapse
Here we go
(Credits for the people on 4pda)

---

This is super helpful! I've linked your guide in my discord server (for Y70 owners) if you don't mind. If anyone is interested in joining, here is the invite: https://discord.gg/r5VMszTGVr
Please feel free to share the link around or invite others. There are help and support channels, and a resources one too. I'm hoping we can attract more people there and have more things shared amongst each other.

---

jimbi87 said:
Here we go
(Credits for the people on 4pda)
Click to expand...
Click to collapse
What is this??

---

A alguno le funciona las aplicaciones de streaming como Netflix, HBO, Crunchyroll, etc después de flashear???

---

Where can I find stock ROM for Legion Y70?

---

Something is wrong with the display. There is a bar in the middle of the screen that is displayed in a different shade. I have a factory protective film on my screen.

---

hello , why Programmer Path not work for me , cant click ?

---

G14R said:
A alguno le funciona las aplicaciones de streaming como Netflix, HBO, Crunchyroll, etc después de flashear???
Click to expand...
Click to collapse
I have the same doubt. You managed to find out.
Discord users have stated that it works using Magisk