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--- doc:appunti:hardware:oukitel_g2 [2026/11/01 08:07] – [Best Flashing Tool: highly suspect malware] niccolo
+++ doc:appunti:hardware:oukitel_g2 [2026/11/01 08:42] (current) – [Best Flashing Tool: highly suspect malware] niccolo
@@ Line 50: / Line 50: @@
 </code>
+===== Cannot fastboot from custom image =====
+**[[https://www.hovatek.com/forum/thread-48912.html|Oukitel based on Unisoc chip: is it possibile to fastboot boot from a custom image?]]**
+I tried to root an **Oukitel G2** smartphone, which is based on the Unisoc T606 chip. I tried the procedure based on the script **signidentifier_unlockbootloader.sh**, which uses the identifier token provided by fastboot and an Oukitel leaked RSA key:
+<code>
+./signidentifier_unlockbootloader.sh 473230303030303030303036353835 rsa4096_vbmeta.pem signature.bin
+</code>
+Unfortunately flashing the **signature.bin** file obtained in that way does not work (I used the required modified **fastboot** binary):
+<code>
+./fastboot flashing unlock_bootloader signature.bin
+downloading 'unlock_message'...
+OKAY [  0.001s]
+unlocking bootloader...
+FAILED (remote: Unlock bootloader fail.)
+</code>
+May be this phone is locked with a different **rsa4096_vbmeta.pem** key.
+Does anyone know if it is possibile to boot using fastboot and a custom kernel image?
+I extracted the **boot-gki.img** file from the ROM image, then I patched it using Magisk 26.4 (patching seems successfully), ten in bootloader mode I executed:
+<code>
+fastboot boot magisk_patched-26400_Y9t93.img
+</code>
+But it seems that the phone starts with the stock kernel image, because Magisk says it is not installed and root is not available.
+  * Yes, I enabled the Developer options => OEM unlocking
+  * Yes, I tried the standard fastboot flashing unlock, fastboot oem unlocking, etc.
 ===== Special boot menus =====
@@ Line 78: / Line 111: @@
 I decided anyway to test the program by installing it on a "sacrificial" Windows PC. In my assessment, Best Flashing Tool falls somewhere between being **unreliable software** and **outright malware or a scam**.
-This is the md5sum of the version 1.6 installer:
+These are the md5sums of the 1.6 and 1.7 installer files:
 <code>
@@ Line 84: / Line 117: @@
 c075f8660444f866c05b5b7c902e2882  BFTSetup1.6.rar
 ba2afe11365af9113ad8b6119d7c6efa  BFTSetup1.7.rar
-d41d8cd98f00b204e9800998ecf8427e  BFTSetup1.7.exe
+5070218bc01ebd9b3dc3d285c63e0bf0  BFTSetup1.7.exe
 </code>
@@ Line 90: / Line 123: @@
 {{.:oukitel-g2:bft-error.png?direct&320|Best Flashing Tool malware not working}}
+The same result was obtained with version 1.6 and 1.7 on Windows 10 Pro.
+===== Web References =====
+  * **[[https://github.com/nethgraves/Unisoc_UBL]]**