Sorry to say but you didn't understand.
1) The ADVICE "spare money and do it when you can afford it" it's the WISEST thing you can do : data is safe and sound INSIDE the drive, and if data consist in digital memories (invaluable) , you can recover it LATER. If you wrap the drive in a safe envelope and keep it safe, data will be safe and sound till the moment it will be recovered. See also 2).
If we are talking about downloaded / replaceable stuff, consider the loss and download / replace it again.
Needless to say that FW update is a CRITICAL operation (even if "they" make it appear simple and safe , but consider for example a power loss during update...) and data , especially CRITICAL data, must be always backed up.
2) This forum is not an help desk : you have contacted someone else, and
YOU SAID : (look at very first post, it wasn't me writing

"I've been trying to contact
WD but
they are all stupid idiots being of no help at all....."
If I was rude, how do you call this? We have a colourful expression in Italy ... All the rest is confirmed : you were lucky to have at least an answer, what you hadn't on other forum so at least say "thank you".
Bear in mind that data recovery and running an enterprise is not a game , and nobody here OWE nothing to anybody. You want to do "Mc Gyver style" repair of a disk that require, to diagnose and gain access to internal FW, 10'000 (TEN THOUSAND) EURO worth of equipment and know how that can't be bought but is result of reverse engineering, study and time (BTW you claim you are a student : you should know how much is the cost of LEARNING).
So what was said was a truth that hurts, but it is THE TRUTH, like it or not.
Finally, "last but not least", you can impersonate everyone you want over the net - albeit I trust you being a student, doesn't change a single bit - so who knows where in depth technical info will go ?
In a nutshell, if you ASK, you can't AVOID the answers even if you don't like them .
Side note : almost all pros are under strict NDAs (NON Disclosure Agreements) or simply won't/can't give any info that can bite them back later or jeopardize their bread and butter.
You'll understand probably better when you will finish your studies and you will hopefully work

.
PERIOD.