@bigmasterv If you have saved the 12 seed words from your mobile wallet you can restore the wallet using another mobile wallet that supports Qtum, or restore the wallet on the Qtum web wallet using "Restore from Mobile Wallet". If you lost the 12 seed words, I'm sorry to say, your QTUM are lost for ever.
See the available Qtum wallets at https://qtumeco.io/wallet
QRYPTOS was using the old ERC20 version of QTUM previously. Is is possible that your account at QRYPTOS is expecting to see Ethereum ERC20 tokens? A Qtum wallet will have Qtum Mainnet coins with addresses that begin with the letter "Q". The old Qtum Ethereum ERC20 tokens (which shouldn't be used anymore) would begin with an Ethereum "0x" address.
For those who are still struggling to access their QRC20 tokens kept in their Ledger, Wannabit Wallet recently updated a function to allow users to easily manage their QRC20 tokens in their Ledger wallet.
Wannabit Wallet is a crypto wallet solution that currently supports BTC, BCH, ETH, ETC, QTUM and EOS (upcoming). Users can access their wallet through connecting their Ledger, Private Key, Mnemonics, or creating a new wallet much like Myetherwallet.
No wallet information is stored in our servers unless users choose to use the 'favorite wallet' function that encrypts and saves your wallet info and lets you transfer funds through OTP confirmation (This could be a useful tool for those who do not want to type in their wallet info every time they try to access their wallet.)
To withdraw your QRC20 tokens from your Ledger, you can simply log into Wannabit, connect your Ledger (like Myetherwallet), choose your token, and withdraw it to your desired address.
Official Website: https://wannabit.io
Wannabit Medium: https://medium.com/@wannabit
You could Restore from Mobile Wallet in the Qtum Web wallet, and that would move your address from Android to the Web wallet. You could also simply send the QTUM from Android to a new wallet on another platform.
Mediblock has a swap form (https://medibloc.org/en/airdrop/qtumcore) which looks like you need to provide a Qtum address but sign from your Ethereum wallet. Please take a look and good luck!
Thanks for your help, I have the same idea yesterday. so after my work I take a second SD card and install another raspbian on it.
I put the last version 0.15.3 and my saved-wallet.dat. After install, 23 connections.
So I think that I'll will save my new wallet.dat in order to install (again) on my new SD card samsung endurance (64Go).
Thanks for your help.
The wallet.dat file contains the encrypted pivate keys. Without that file, all is lost. Do you have any earlier (unencrypted) versions of the wallet.dat file? You could try a disk recovery utility or maybe SpinRite https://www.grc.com/sr/spinrite.htm but without recovering the wallet.dat file, all is lost. If it was a signicant amount you could also try a commrecial disk recovery serivce, but the good ones will be expensive and there are no guarantees of successful recovery.
@gma That website is having some problems now, but you can download directly from the Qtum GitHub at https://github.com/qtumproject/qtum/releases.
For Mac, select the wallet qtum-0.16.2-osx-unsigned.dmg.
For QRC20 tokens, the Qtum web wallet works well https://qtumwallet.org/ and has MED built-in:
As with any QRC20 token transaction, you must hold QTUM on the associated Qtum address in order to send those tokens (to pay for "gas").
Looks like your connection to QTUM was lost, please wait while we try to reconnect.