1. You can unlock the bootloader and flash TWRP on 20s, provided that your ROM firmware isn't WIXCNFN5802005041S, which is the stock 20s ROM, I believe.
2. You cannot unlock the bootloader and flash TWRP on stock 26s. This will cause the bootloader to be permanently locked, and you'll only have access to fastboot mode. The only way to fix your phone would be to use Qualcomm's 9008 mode and a QFIL file for the x722... which doesn't exist.
3. Anyone who downgrades their ROM to the 01D ROM can unlock the bootloader and flash TWRP. It's just that if you're on a vendor 20s ROM, you can do so without having to flash 01D. Some users may flash 01D over their 20s vendor ROM to be safe, but this is not a necessity. The 01D ROM is really only for anyone on LeEco stock ROMs. Which very few of us are on, because third-party sellers almost always load their own ROMs on the x722.
---------- Post added at 08:30 PM ---------- Previous post was at 08:30 PM ----------
1. You can unlock the bootloader and flash TWRP on 20s, provided that your ROM firmware isn't WIXCNFN5802005041S, which is the stock 20s ROM, I believe.
2. You cannot unlock the bootloader and flash TWRP on stock 26s. This will cause the bootloader to be permanently locked, and you'll only have access to fastboot mode. The only way to fix your phone would be to use Qualcomm's 9008 mode and a QFIL file for the x722... which doesn't exist.
3. Anyone who downgrades their ROM to the 01D ROM can unlock the bootloader and flash TWRP. It's just that if you're on a vendor 20s ROM, you can do so without having to flash 01D. Some users may flash 01D over their 20s vendor ROM to be safe, but this is not a necessity. The 01D ROM is really only for anyone on LeEco stock ROMs. Which very few of us are on, because third-party sellers almost always load their own ROMs on the x722.
---------- Post added at 08:32 PM ---------- Previous post was at 08:30 PM ----------
1. You can unlock the bootloader and flash TWRP on 20s, provided that your ROM firmware isn't WIXCNFN5802005041S, which is the stock 20s ROM, I believe.
2. You cannot unlock the bootloader and flash TWRP on stock 26s. This will cause the bootloader to be permanently locked, and you'll only have access to fastboot mode. The only way to fix your phone would be to use Qualcomm's 9008 mode and a QFIL file for the x722... which doesn't exist.
3. Anyone who downgrades their ROM to the 01D ROM can unlock the bootloader and flash TWRP. It's just that if you're on a vendor 20s ROM, you can do so without having to flash 01D. Some users may flash 01D over their 20s vendor ROM to be safe, but this is not a necessity. The 01D ROM is really only for anyone on LeEco stock ROMs. Which very few of us are on, because third-party sellers almost always load their own ROMs on the x722.