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let's try to install nvflash on an asus transformerpad. nvflash is a special bootloader, which protects that very bootloaderfrom firmware flash accidents, which may turn you tablet to a brick. a brickis a situation when you can't restore you device anymore, essentially turningyour pad to an expensive piece of silicon.a common trait of all hacker solutions, the instructions are minimal andrequire the user to know a lot. if you don't, you'll have to spend manyhours online trying to gather information piece by piece.so, what will you need? first, enable usb debugging on your tablet.next, use the official asus utility to unlock
your bootloader, which i describedin another video. it's worth mentioning, that even this is official utility,it voids your warranty. it is considered that you can't lock your bootloaderagain, however, some forum posts say it's tricky but possible.you also need special usb drivers, download them.get nvflash on the same page. you will also require a mysterious fastboot.it turns out this is a part of android sdk, but if you don't want to downloadthe whole package, just get fastboot separately.so you have four folders: drivers, fastboot, nvflash and wheelie.for convenience, put files from the latter
free into a single location.now turn off your tablet, then power it on again, holding volume down button.in the left upper corner checking for rck image will appear, and then 3 icons in themiddle of the screen. using volume down, select the usb icon, and then pressvolume up to confirm. you're now in fastboot mode.windows doesn't have drivers for this mode of course, so go to device managerand manually point it to the path where you extracted the downloaded drivers.now a fastboot device should appear in the device manager.so, now open command prompt in the folder where we merged three folders together,and enter the following command:
fastboot -i 0x0b05 flash staging ebtblob.binonly to get signature mistmatch error. it turns out there was an update from asus,which did not install jelly bean, while adding signature check to the bootloader.that 4.0.3 firmware version 9.4.5.30 . in other words, this version introducedsignature check: from now on, to update you bootloader the update filemust be signed by asus. that's exactly the same way game console manufacturersprevent users from running unsigned, homebrew applications. needlessto say, the custom bootloader we're trying to flash is not signed by asus.neither are previous official firmwares prior to version .30 , since signaturecheck was introduced in
this version only. that's why you can't downgradeto an earlier bootloader. deadend.so, on one hand, asus officialy issues a way to unlock your bootloader,like, guys do whatever you want, but this void you waranty, which is somewhatfair. on the other hand, asus releases a software update effectivly blockingall non-asus bootloaders from installation. so, by unlocking your device,you've lost you warranty and gained nothing, since it is still locked toasus-only software. so basically asus is heading full speed the way alreadypioneered by apple, sony and other copyrasts. that's sad and indescent.so, what to do now? well, let's at least install
jelly bean. since we unlockedour device and ota updates are not available for us anymore, we'll have to flashcomplete image, which is even better in the long run.you may flash it with fastboot, but's its much easier to flash from a microsdmemory card. first, download the update from asus website.it's a archive, which has another archive inside, which has blob andmetadata. unpack it only once, leaving the second archiveinside untouched. copy it as a zip to the root of the memory card, poweroff the tablet, insert the card and power on the device. now select updatefrom the notifications list and
confirm it. updating will take about 5 minutes.a quick check - the update was a success. if you got problems with keeping root, addclockworkmod recovery to the fastboot folder, copy supersu to you device,flash clockworkmod recovery and use it to install supersu.if you've lost flash, just get it from adobe website and install as a package.
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