3) Lets agree that Ledger is strongest in this market and so far most successful.
It's your personal opinion that they are the strongest. They are certainly the most successful in terms of sold units and generated profit. They also have the best marketing and invest a great deal on that front.
YES they are most Profitable!
5) I assume what I did, to share my knowledge with other readers in the forum is exactly the intention of these kind of forums. If you do not like my proposed method, you can simply ignore it.
You are free to write whatever you want, no matter what someone else says or thinks about it. But I am asking you again. Is this just theory, or have you tried it out yourself or maybe you know someone who has?
Answer to your question is "Yes". I tried / applied it several times on different devices including Ledger Nano X. At least I have repaired more than 50 LNX units (you may ask why: answer comes later). as well as Bluetooth headphones.
I am an electronic technician and I live in a country that Ledger does not ship product to (I mean Directly).
So traders brings the product on behalf of Ledger and resell. In this situation, consumer can not return the product to Ledger if it has a battery problem. Due to reasons:
1) they do not have any proof of purchase from Ledger
2) Ledger can not send them a return label, as Ledger does not have any shipping service to Iran.
So I have been working with local sellers such as:
https://walletjoo.com/They are not official seller - as ledger has not got one in Iran - but they resell genuine product.
Even there is Ledger repair service in Iran, that provides all the local supports - including all the genuine parts.
https://ledgernano-net.translate.goog/ledger-service/?_x_tr_sl=fa&_x_tr_tl=en&_x_tr_hl=en-US&_x_tr_pto=wapphttps://ledgernano.net/ledger-service/This is a common problem form Lipo and Li battreis. When the shelf time is so long - the battery Voltage drops and it means the resistance goes very high. So there is a risk of fire if the power pass by upon connecting it to a power supply. Therefore, the little Capacitor behind the unit blocks all the current. I think Ledger changed this in the new firmware. So the tolerance is much more than before - and battery can charge now easier.
I must say I hear much less these days that this problem happens. And if a device has a problem, without changing the battery, I simply upgrade the firmware and problem simply gets solved.
Again, I am (somehow) expert on this, and I can imagine not everybody is familiar to do it.
Another crazy point is that you can not upgrade the device firmware with your iPhone, or Android!! while the product is meant to be used only with a mobile phone. I asked ledger support what to do, if one does not have a laptop? Are you going to send me one?
they reacted , no you have to borrow one!! Stupid.